Sima Yi

, Class Name , is a Rider-class Pseudo-Servant in the body of Reines El-Melloi Archisorte summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order.
==Profile==
===Identity===
Sima Yi a military general, government official, and regent of the state of Wei during the Three Kingdoms period of China, also known by the courtesy name Zhongda(Chūtatsu).
A figure in both military matters and politics, as told by the Records of the Three Kingdoms and the likes. Posthumously revered as Emperor Xuan, he is ultimate victor of the Three Kingdoms Era.
… Be that as it may, 
Just as his nemesis and fellow strategist, he has taken possession of a young female Magus. “Well, in terms of adapting to the modern world, it would be the rational choice to return conscious control to the vessel. Even still, aren’t you guys a bit too rational?"
Reines, the girl who acts as the vessel, is the original Lord of the El-Melloi faction, which is one of the twelve great houses that operates the Mage’s Association.
Even though she did in fact inherit the position of Lord, due to her age and power struggles — as well as the fact that it appeals to her personally— she has offered the position to Lord El-Melloi II, and took to playing the unseen mastermind. This Reines comes from a reality where she is very close to her world's Olga Marie Asmleit Animusphere, so much that the Princess of El-Melloi is very familiar with Olga Marie's habits; Reines notes that the Olga Marie, that she befriended, greatly differs from Chaldea's Olga Marie who has never boarded the Mystic Eye Collection Train: Rail Zeppelin and never took part in the Grand Roll which resulted to Reines's counterpart having barely crossed paths with Chaldea's Olga Marie. 
===Appearance===
The physical attributes are, of course, those of the vessel.
===Personality===
While becoming a pseudo-servant, Sima Yi had asked for her help in dealing with modern matters, just as Kongming (Zhuge Liang) did. However, he didn’t seem to be as open-minded and rational as Kongming, and there are often glimpses into the personality within.
Reines serves as the primary personality, with Sima Yi only surfacing when something catches his curiosity. Unlike most Pseudo-Servants, Sima Yi considered allowing his vessel's personality to have sole consciousness to be inefficient, and is able to communicate directly with Reines whenever he wishes or speak through her directly if needed. 
Reines has a problematic personality and feels satisfaction at another person’s crisis and troubles as she enjoys seeing the protagonist suffer from her personal mischief where even a devilish tail, and wicked smile, appears whenever she is in a puckish mood. 
Although she always speaks in an easygoing manner, she is actually extremely cautious. Schemes have become a forte of hers after all the assassination attempts on her as a Clock Tower Lord candidate. Reines admits that, despite how the protagonist's group is fighting for the survival of human history, she personally feels at ease in Chaldea as the domain is enjoyably peaceful to her compared to Clock Tower, which was a ceaseless torrent of Machiavellian conspiracies,
Although she is friendly with the other Servants, especially with other female Servants, she never opens up to them at all. However, once you forge a genuine bond with her, she can be clingy and meddling in many ways. Very Reines-like.
====Relationships====
;Zhuge Liang
:"I see that my brother is working hard even in a place like this. If he could just be a little more carefree, he might smoke cigars less... No, perhaps he's good the way it is..."Fate/Grand Order - Sima Yi Lines
:My elder brother is quite busy growing and shrinking. In other words, stepping on him will be worthwhile.Fate/Grand Order material VIII - Sima Yi's profile, translated by Reddit User amplifiedscans
;Astraea
:"Aw shucks, that Luvia's a Divine Spirit... Well, I understand why that happened to a certain degree, but even with that manifestation, she still has an over-the-top, luxurious, spoiled lady look..."
;Ishtar
:"Oh my, oh my. I can't believe that red devil ended up becoming a goddess. Though it looks like some things never change..."
;Ishtar (Swimsuit)
:"My goodness! That Rin even has a summer outfit! No, I know she's not Rin, but everything is so fitting in so many ways..."
;Gray
:"Ah yes. I'm glad Gray's here. I know you're busy, Master, but at least you can spare time to have tea with us, right?"
:"You’re his apprentice. Feel free to be more vocal with him."
;Olga Marie Animusphere
:"Is that what you call fubin moe?"
;El-Melloi Classroom Servants
:"You all need to calm down."
==Role==
===Fate/Grand Order===
====Event: Lady Reines Case Files====
Due to her connections with El-Melloi II and the effects of Chu Shi Biao, Reines is summoned to the Singularity as the Pseudo-Servant of Sima Yi. Unfortunately, being forced into the position caused her to think she is El-Melloi II.Fate/Grand Order - Lady Reines's Case Files - Section 9: A Magus' Deduction
On a train, Reines smacks Ritsuka awake, addressing them as her pupil. It doesn’t amuse her that Ritsuka doesn’t remember she is their tutor, El-Melloi II, and wonders if they’ll tell her they don’t remember who they are. Ritsuka asks her what happened to Chaldea, but Reines assumes they’re talking about the country absorbed by Babylonia and believes they were dreaming about Animusphere’s astromancy class. She then has Ritsuka carry her bag as they both exit the train. She suggests returning to her flat when Ritsuka notices a darkened Clock Tower. Eventually, the pair arrives outside of her flat when she notices something is amiss with its Bounded Field. She then forces an automaton that ambushed them to retreat. Feeling like they’re being watched, she and Ritsuka enter her flat.Fate/Grand Order - Lady Reines's Case Files - Section 1: Magus' Disciple
The pair find the corpse of the real El-Melloi II in the study. Reines is confused why she thought she was El-Melloi II. She then notices an “M“ written in blood near her brother when an automaton suddenly bursts in. After defeating it, reinforcements arrive, so Reines orders an immediate retreat through the window. Despite them being on the fourth floor, she pushes Ritsuka out of the window and follows them after activating Trimmau.
Upon landing outside, Reines shoots a magical bullet to destroy the automatons inside before retreating with Ritsuka and Trimmau. Properly introducing herself to Ritsuka, she questions why she assumed she was El-Melloi II, and why he was murdered. Trimmau also thought Reines was El-Melloi II until a moment ago. Reines surmises she and Ritsuka both had their memories falsified. She then realizes something is wrong with this world, which triggers the town to warp. As it does, a garbled transmission from Mash says something about Saint Graph Trunk. After the transmission cuts, the town is warped into a bizarre scenery. Reines deduces whatever was messing with their perception broke when they realized something was wrong with their memories and the world. She also realizes the trunk she thought was hers is the Saint Graph Trunk. She then decides they need to find whoever killed El-Melloi II and stole their memories. She wonders about the bizarre scenery when Paul Bunyan reveals the town is called Patchwork London. She then carries Reines and Ritsuka on her shoulders after saying she knows about the “M“.Fate/Grand Order - Lady Reines's Case Files - Section 2: Searching for a Neverland's Denizen
Bunyan takes the pair to a museum, where Sakata Kintoki and Jack the Ripper are. She asks Ritsuka and Reines to help find her friend, but neither she nor Kintoki remember who it is. She explains she was looking for help when she found Ritsuka and Reines. Reines agrees to help and asks Bunyan about the enemy’s identities. As Bunyan describes them, the very same monsters emerge from the museum. In response, Ritsuka uses the trunk to summon Servants to fight the monsters. Afterwards, they, Reines, Jack, and Kintoki enter the museum.
The group makes a full circuit of the museum and leaves after dealing with a monster ambush. Reines asks Jack when her friend went missing. But neither Jack nor Kintoki can remember, so Reines suggests allowing her and Ritsuka to explore the museum on their own, which Kintoki allows.
Inside the museum, Trimmau uses her liquid form to search the building for hidden passages and/or rooms. She finds none, so Ritsuka suggests searching the library. There, while searching the bookshelves, Reines twists her neck all the way round, surprising both Ritsuka and the third book from the right. At Reines’ instruction, Ritsuka pulls out the book, which turns out to be Nursery Rhyme in her book form. After Nursery Rhyme takes her Alice form, Reines deduces she forgot about her friends as both she and her friends forgot who or what she was. She tells Nursery Rhyme that her friends are waiting at the museum’s entrance. After Nursery Rhyme leaves, Reines notices a scrap of paper where Nursery Rhyme in her book form was. The paper reads Mnemosyne, which makes Reines wonder if it is what the “M“ referred to. She then suddenly remembers that she is a Pseudo-Servant while Ritsuka remembers they are humanity’s final Master. Mash then contacts them, and they tell her about El-Melloi II’s murder and their amnesia. Mash reveals Ritsuka and El-Melloi II were rayshifted to the Singularity, but during rayshift, Chaldea lost both their signals. She then reveals there was a recent change in the Singularity’s topography and tells Ritsuka and Reines to investigate.
Arriving in the new territory of Patchwork Masquerade, Reines deduces each Patchwork is centered around a theme, with the first being fairy tales. Mash asks her and Ritsuka if they’ve noticed anything strange in their memories. Reines replies it would be difficult to tell currently, but they’ll be cautious nonetheless. Mash agrees to tell them immediately if she notices anything when she detects a large source of magical energy nearby. Reines deduces it’s from the Tower of London, and heads there with Ritsuka after Mash cuts the transmission.Fate/Grand Order - Lady Reines's Case Files - Section 3: Masquerade
Upon entering the palace, Reines deduces it is a patchwork of its history. The Masquerade soon begins; Reines questions why the pianist is absent despite the piano being the central performance. Ritsuka remembers Antonio Salieri and wonders if he’s the pianist. The piano then stops in the middle of the song, and upon hearing it has happened before, Ritsuka and Reines decide to investigate further. Reines feels like there was something artificial about this case, like there was with the Nursery Rhyme case. She feels someone, possibly El-Melloi II’s killer, is deliberately setting up these riddles for them to solve as a way of challenging them, and suspects it all ties back to the whydunit. James Moriarty then suddenly hands her and Ritsuka masks they proceed to wear. He introduces himself as M, causing Ritsuka to react under the assumption M refers to El-Melloi II’s dying message. Reines quietly warns them not to react so openly and says they need to think on how to proceed if Moriarty is the murderer or an accomplice. Asked by Reines, Moriarty explains the pianist’s identity is unknown since every investigation involving them is unauthorized. The only fact known about them is that they reside in the palace. He then takes the pair to the Bloody Tower where the pianist supposedly resides.
Outside the palace, Moriarty tells the pair to scale up the wall while he distracts the guard. He starts distracting the guards when mask wearing ghosts suddenly appear. After destroying some ghosts, the group enters the tower.
Inside the tower, while Moriarty goes on ahead, Sima Yi asks Reines why he was summoned. Seeing Ritsuka thinks she is talking to herself, Reines that was the Heroic Spirit possessing, and repeats Sima Yi’s question. The pair then hear a shriek and proceed to its source. They arrive in a room to see William Shakespeare and Moriarty being attacked by a masked automaton. After destroying it, Reines assumes other automatons already kidnapped the pianist. Shakespeare explains he wanted to see the pianist himself. Artoria Alter then enters the room with her guards and assumes the group kidnapped the pianists, even though Moriarty introduced her to them. Moriarty responds he and the others came to find the pianist as well. Reines asserts they are innocent and tells Artoria Alter she and Ritsuka will solve this mystery. Artoria Alter agrees to reward them if they do. After Artoria Alter, and her guards leave with Moriarty and Shakespeare in their custody, Reines deduces they’re all connected to the pianist. She then suddenly fires a blast at EMIYA hiding behind the piano, having sensed him earlier while conversing with the Queen but didn’t reveal him so to avoid complications. He claims he isn’t the kidnapper and flees out the window with the others giving chase.Fate/Grand Order - Lady Reines's Case Files - Section 4: Arbitration Invitation
Landing outside the tower, Reines orders Trimmau to not let EMIYA escape. While the three are fighting, EMIYA tries to shoot Reines, but Trimmau protects her at the cost of damaging herself. In response, Reines activates Unspeakable Formation, to restrict EMIYA’s movement. He struggles against her and Ritsuka when his client, Astraea, arrives; Reines recognizes her body as Luviagelita Edelfelt. Astraea warns Ritsuka and Reines to stop investigating Mnemosyne for their own good. After Astraea and EMIYA leave, Ritsuka and Reines go question those involved in the missing pianist case. After questioning them, she orders Trimmau to sift through her unconsciousness for any keywords. Trimmau reports she has discovered three keywords: forgetfulness, ghost, and Pseudo-Servant. Reines ponders about the connection when she realizes something about the pianist. The pair then return to the piano room.
Upon returning to the piano room, Reines finds a Mnemosyne scrap in the automaton like she deduced there would be. She deduces the scrap was used to instill the automaton with specific human memories and allow it to move. Everyone knew, but they forgot. Everyone knew, but they forgot. She then invites the eavesdropping M into the conversation. Moriarty remembers he and Shakespeare used the scrap to create an artificial Salieri, an arrangement Artoria Alter also accepted. But when they forgot that the pianist was a facade, the automaton went berserk. Reines prepares to retrieve the scrap when Astraea arrives to punish them. Ritsuka and Reines fight her, while Moriarty holds EMIYA off. The pair struggle against Astraea when automatons arrive to capture Reines, who they assume to be El-Mello II. They’re quickly destroyed though by Gray, and Ritsuka retrieves the scrap.Fate/Grand Order - Lady Reines's Case Files - Section 5: A Melodic Response
Ritsuka is rendered unconscious upon retrieving the scrap. Carrying them, Reines and Gray went to the Patchwork of Dazzling Steam and rent a room at a hotel. While waiting for Ritsuka to wake up, Reines tells Gray about El-Melloi II. Gray confesses she was summoned to the Singularity as a Servant, though she doesn’t know by what or what for. Ritsuka eventually wakes up and temporarily contracts with Gray. Mash reveals through her analysis of the previously collected Mnemosyne scraps that there are smaller scraps. The group set out to find and retrieve the scraps.Fate/Grand Order - Lady Reines's Case Files - Section 6: Dazzling Steam
Outside of the hotel, the group sees a parade of automatons riding steam-powered horses, with the Patchwork's king, Charles Babbage, riding in a steam-powered wagon. Suspecting Babbage has a connection with the scrap, Reines goes alone to search for a clue to prove that connection. Artoria Alter finds her, having been looking for her and Ritsuka to grant them their promised reward. They return to Ritsuka and Gray, and Artoria Alter agrees to grant their request to meet with Babbage, especially since she was already planned to speak with him anyway.Fate/Grand Order - Lady Reines's Case Files - Section 7: King's Memories
Artoria Alter takes the group to Babbage’s throne room. After learning of their search for the Mnemosyne scraps, Babbage asks them to destroy his kingdom, as it is an unnatural realization of his dream. He reached this conclusion thanks to the Astraea’s guidance, who appears in the room. She reveals everyone in the Singularity, including herself, are missing memories and explains how she needs the scraps to compensate. Babbage reveals the scrap is infused into his body when Reines asks where it is. He explains the scraps are central to each Patchwork, and they immediately seek residence in what’s closest. Since the scrap is likely infused with his Spirit Core, he requests the group to kill him, calling it a last resort when they refuse. He reveals Astraea searched for an alternative in the other Patchworks, which explains why Ritsuka and Reines met her in the Tower of London. He then tells the group to locate his subsystem located somewhere in his castle.
Searching for the subsystem, Ritsuka’s party locates a secret passage and follows it underground. After destroying the steam ghosts they encountered, they reach the core of the castle and witness ghosts being absorbed into a massive steam engine for their magical energy. Trimmau reports the engine has traces of Mnemosyne scraps that someone retrieved prior. Reines surmises the steam ghosts are the result of the scraps’ magical energy and ghosts fusing with the steam. After destroying the steam ghosts, the group finds Babbage’s subsystem, the Difference Engine. Reines uses it to discover that it was El-Melloi II who retrieved the scrap. She also realizes Babbagge forgot the scraps were in the engine. She further realizes the enemy’s goal was to use the energy taken from memories, which are normally inefficient as a source of energy, but she deduces there is something about the Singularity that makes memories an extremely potent energy source. Further deducing the Difference Engine has been working independently, Reines surmises the automatons went after her brother to get back the scrap he stole. She then says they need to return to her brother’s flat immediately.
The group returns to Patchwork Fairy Tales to discover it has been warped into a city consumed by fire. Automatons and steam ghosts piling on each other in what remains of El-Melloi II’s flat, each trying to get the scrap. Astraea soon arrives and uses her Noble Phantasm, Custos Morum, to destroy automatons and steam ghosts, then goes to retrieve the final scrap. The group gives chase to reach the scrap before she does while fighting through enemies, and avoiding the remaining stars from her Noble Phantasm. However, far too many enemies stand in their way, as Astraea nearly reaches to the scrap. Gray prepares to unleash her Noble Phantasm to stop her when EMIYA arrives and stops Gray. After EMIYA is defeated, Gray launches Rhongomyniad, easily breaking through Astraea’s Custom Morum. With Astraea down, the group rush to reach the scrap. However, upon touching the scrap, Ritsuka finds their memories of Da Vinci are being erased. A figure tells them to accept those as no longer being the truth when El-Melloi II breaks the process. He reveals the scrap was a trap. Reines and Mash doubt it’s really him, to which he explains how he used his special properties as a Pseudo-Servant to create a corpse of himself. While it left him without nearly all of Zhuge Liang’s powers, it also allowed him to investigate without being detected as a Servant. He then explains how the enemy tried to use the scraps to rewrite Ritsuka’s memories. He concurs with Gray that Chaldea would know the validity of Ritsuka’s memories, but questions why they’ve only received transmissions from Mash, and explains the enemy needed someone Ritsuka absolutely trusted to guide them. Reines then deduces the “M“ in El-Melloi II’s message was for Mash. El-Melloi II reveals the Mash they’ve been talking with so far is a fake. After “Mash“ blocks communications, El-Melloi explains the enemy fabricated her to manipulate the group. He therefore suspects the enemy has information on Chaldea and believes the final scrap is related. He cannot deduce anymore though with his analysis of the final scrap, but he says Babbage could provide a deeper analysis. The group then return to Babbage’s castle with El-Melloi II, Astraea, and EMIYA.Fate/Grand Order - Lady Reines's Case Files - Section 8: The Final Scrap
Babbage agrees to analyze the scrap, believing it may provide clues to the enemy. The analysis will take time, so he invites the group to rest in his castle. He believes the enemy would know why Ritsuka needed false memories implanted into them when Astrae asks why. He also wonders what particular memories of theirs were being erased. El-Melloi II deduces the enemy pities them, with good yet ill intentions. Reines then realizes she, Luvia, and Gray were summoned because El-Melloi II failed, meaning when he created the corpse because he was driven into a corner. She, Gray, and Luvia were more inclined to be summoned because of their deep connections with him. But while Gray could reasonably qualify as a Servant, the same cannot be said for Luvia or Reines, so Reines deduces it was thanks to Zhuge Liang's Noble Phantasm. El-Melloi II confirms it was Chu Shi Biao. Reines deduces Sima Yi was summoned thanks to his connection with Zhuge Liang. She also concurs with Gray that being forced into the position of Pseudo-Servant caused her to think she was El-Melloi II when first summoned. She mocks her brother for refusing to rely on others until things get really bad, but she and Gray would rather have that than a heartless fool who refused to do the same under similar circumstances. Then, having mentally exhauseted herself, Reines goes to take a breather while Babbage's analysis is being done.
Out on the balcony, Reines tells Ritsuka that she is grateful to them because if she wasn’t trying to keep it together for her pupil, she’d probably still be staring at her brother’s “corpse”, at least until an automaton killed her. She is happy to see him alive and to have Gray with them, thankful she can speak with them both. Embarrassed, she asks Ritsuka not to tell El-Melloi II, claiming she only said it because Ritsuka is her first pupil. She suggests all four of them have tea together once the Singularity is resolved. Ritsuka then goes back inside at her recommendation, while she stays out a little longer. Later, however, Reines realizes what she thought was the Clock Tower was a fake Rhongomyniad and rushes back inside to show Ritsuka, El-Melloi II, and Gray the truth.
Babbage reports many steam ghosts and automatons are emerging from its interior, with approximately 80% of them heading out to capture Ritsuka. He then gives his analysis of the final scrap, revealing the enemy is related to Chaldea. El-Melloi II assumes they’re a traitor since they knew both Mash’s appearance and mannerisms. Babbage then gives the second name revealed in his analysis: Mnemosyne, a system of Chaldea. Reines and Astraea decide to assault the fake Rhongomyniad, but Babbage warns against it with all the enemies swarming out. Gray says she could clear a path, but she lacks the magical energy to do so. El-Melloi II suggests collecting the smaller scraps for magical energy and asks Babbage to provide a countermeasure against their fabricated memories.Fate/Grand Order - Lady Reines's Case Files - Section 10: The Fake Holy Lance
Joined by Babbage, the group search for the smaller scraps, and fight through their fabricated memories. Following a battle against fabrications of Ultra Heroine Z, and later a fabrication of Mysterious Heroine XX called Super Heroine ZZ, everyone is left exhausted seeing so many Artoria Faces. Reines is astonished that such a phenomenon is common in Chaldea. Ritsuka doesn’t recall such a battle, so El-Melloi II suspects the enemy added possible memories. Seeing how crazy Chaldea sounds, Reines suspects the Lords wouldn’t believe a word of it, no matter how official the report. However, she believes they would believe an official report if El-Melloi II wrote it, since he is a Lord of Modern Magecraft. Suggesting he write such a report, she imagines how the Lords would react and imagines there being an uprising, with her brother’s classes joining in. She also wonders what the Clock Tower is like ten years after their time there. But to her disappointment, El-Melloi II refuses to do as she suggested, believing even a Pseudo-Servant should strive to have as few ties to the modern world as possible.Fate/Grand Order - Lady Reines Case Files, Saber Wars ?!
Afterwards, the group defeated a fabrication of Gawain at Camelot’s front gate, though his Gift of Nightlessness wasn’t functioning.Fate/Grand Order - Lady Reines Case Files, Deplorable Wall
Next, they defeat a fabrication of Black Iri, who transforms into a corrupt version of Illyasviel von Einzbern. Reines noticed EMIYA was lost in thought for a while and asks him if he was involved with Fuyuki during the Fourth Holy Grail War. EMIYA denies any connection and runs off. Reines can't help but feel he was summoned to the Singularity for a reason. She then asks her brother how feels about the fabrication, given he fought in the Fourth Grail War when he was younger. El-Melloi II recalls his experiences with the alternate Fourth Grail War and is thankful he got to see the fabrication. But regardless, he now understands his actions can affect the world and finds it fortunate he got a chance to understand who he is.Fate/Grand Order - Lady Reines Case Files, Bullets and Grail...
Afterwards, the group defeats fabrications of Heracles and Medea on the Argo followed by fabrications of a corrupted Benkei.Fate/Grand Order - Lady Reines Case Files, To Deceive or To Be Deceived?Fate/Grand Order - Lady Reines Case Files, Master and Servant Reines sees Ritsuka cannot say anything and tells them they don’t have to because they must always hold on to their memories, a notion El-Melloi II concurs with.
With the smaller scraps collected, Gray uses their magical energy to create an opening in the fake Rhongomyniad and a crystal stairway to it. Ritsuka, Reines, Gray, and Astraea ascend the stairs when they’re transported into a fabrication of the Battle of the Time Temple by a sudden Mnemosyne scrap. There they are confronted by fabrications of Lev Lainur Flauros and Barbatos. While Astraea bombards the Demon Gods with Custos Morum, Reines extracts Ritsuka’s memories of fighting the Demon Gods for her Noble Phantasm. Then, after Barbatos is fought several times, she uses her Noble Phantasm to rewrite the fabrication so Ritsuka is the Demon Gods’ conceptual weakness based on the fact Ritsuka slew more than anyone in history. With the fabricated Barbatos destroyed, the group continued their ascension.Fate/Grand Order - Lady Reines's Case Files - Section 10: The Fake Holy Lance
Eventually the group enters the fake Rhongomyniad’s interior, but Astraea is suddenly forced outside. Closing the opening, Mnemosyne explains they created the fabricated memory from earlier in order to weaken Astraea since she was a major threat. Taking on the appearance of Da Vinci, Mnemosyme explains she was a subsystem for verifying a Master’s existence during rayshift in case the staff died, though she was never implemented due to technical issues. Reines realizes Mnemosyne is trying to ensure Ritsuka is protected. Mnemosyne demands the group hand Ritsuka over and fights them. The battle ends when they’re struck by something akin to a Noble Phantasm. Reines deduces Mnemosyne is using the memory of Rhongomyniad since the fake one is her body. She tells Gray to use Rhongomyniad, but Mnemosyne is interfering with its activation. Mnemosyne then uses the Grail to transport Ritsuka into a space of memories.Fate/Grand Order - Lady Reines's Case Files - Section 11: Towards the Extremities of Records and Memories
Gray uses Rhongomyniad to create a link into the space, allowing Reines to at least speak into it. She reminds Ritsuka how everyone they met in Patchwork London was desperately searching for the memories they lost. Both of them now know how bad it feels to be unable to remember. Reines says it always feels terrible to forget, even if you can’t remember the importance of the memories lost, and even feels better to lose them, it will always feel like something is missing. Reines thus proclaims to Mnenmosyne that forgetting is not the solution. Mnemosyne argues though that Chaldea has been too tragic for Ritsuka, claiming she awakened to save them from their flaws and sorrows. Ritsuka, however, refuses to let her take their memories away. Mnemosyne replies she will need to break them, believing they are lying to themselves to cope, and decides to keep them with her until they’re completely healed. However, to her shock, something breaks through the exterior of the fake Rhongomyniad. It was Moriarty ’s Noble Phantasm, with him having sacrificed himself to increase its distance and damage output.
With Ritsuka out of Mnemosyne’s space of memories, Astraea enters the fake Rhongomyniad’s interior. She uses her second Noble Phantasm, Iam Redit et Virgo, to clear the sky of the smog that blocked Chaldea’s communications, allowing Chaldea to reestablish contact. Reines then reveals the motives for each Patchwork and concludes Mnemosyne created the Singularity centered on memory loss because she was the one who wanted to forget. Trimmau reveals the synergy between Mnemosyne and the fake Rhongomyniad has decreased due to Astraea’s Noble Phantasm, so the group use this opportunity to defeat her. With Mnemosyne defeated, all the memories she collected spill out from her. The fake Rhongomyniad begins to collapse as well, since it is her body. The group escape before it finally collapses.
With the fake Rhongomyniad now destroyed, everyone begins to disappear with the Singularity’s imminent collapse. Astraea and Reines both wish the bonds they formed with Ritsuka will let them be summoned to Chaldea before disappearing. It is later revealed Reines used her Noble Phantasm on Mnemoysme earlier, allowing the personified subsystem to see her creator, Leonardo da Vinci, in her final moments.Fate/Grand Order - Lady Reines's Case Files - Epilogue
==Abilities==
Reines primarily has Trimmau fight her battles, with the Mystic Code changing its form in various ways to attack her mistress' enemies.
While Reines uses Western magecraft, Sima Yi uses Fangshi, though not much.Fate/Grand Order - Taigong Wang voice lines - Translated by Comun
===Skills===
====Class Skills====
*Magic Resistance (B Rank): Nullifies magecraft activated with a three-verse chant or less. It will be difficult to harm her even with Greater Magecraft or Rituals.
*Riding (B Rank): Capable of riding most vehicles but not phantasmal species.
*Territory Creation (B Rank) Although not a Caster, Sima Yi possesses the Territory Creation skill on account of his outstanding military feats and is capable of creating advantageous territories.
====Personal Skills====
*Supreme Mystic Code: Volumen Hydrargyrum (B Rank): One of the Supreme Mystic Codes of the El-Melloi faction, one of the twelve families of the Clock Tower. Flexible, transformable. If it becomes an unmatched weapon, it can even transform into a firm armor that strengthens the abilities of the whole body. If needed it can also become a mercury maid. An ability not caused by Sima Yi, but by Reines. If talking about precise manipulation, she’s above her predecessor. The increase of Strength up to B is a boost through this Mystic Code.
*Command of Emperor Xuan (A Rank): The transformation of the Tactician's Command Skill that is given to strategist Servants. Sima Yi is a usurper of authority, and since he later received the posthumous name of the founder of the Jin dynasty, Emperor Xuan, his skill as a strategist and his skill as an emperor have been merged.
*Tactician's Advice (A Rank): A skill bestowed to all tactician Servants. Through having a good grasp and analysis of any situation, she is capable of giving the correct advice to her allies. The higher the skill rank, the higher the accuracy of the advice given. With an A-rank skill, all advice will hit the mark 100% with the exception of unforeseen catastrophes. To counter this, one must possess luck and skills capable of breaking down all sorts of analyses.
===Noble Phantasm===
Her Noble Phantasm is Unspeakable Formation. When the illusory sun and full moon appear over the horizon, the world transforms and all kinds of mystics lose their meaning. In this case, this Noble Phantasm does not erase or nullify them. For example, it instead changes the battlefield into a sea against a Mystic Sword that can cleave land, or reduce the mana in the surroundings against a Servant skilled in magecraft. Simply put, it is a Noble Phantasm that “crushes an enemy’s strengths and exposes their weaknesses”.
==Development==
===Creation and Conception===
Sima Yi was designed by Mineji Sakamoto in Fate/Grand Order. Her scenario writer is Makoto Sanda in Fate/Grand Order.
===Comment from Illustrator===
"I had to make several additions and revisions so I finished her design right before the deadline." (Mineji Sakamoto)
==References==
vi:Rider (Fate/Grand Order - Tư Mã Ý)
Category:Pseudo-Servants
Category:Servants
Category:Rider-class Servants
Category:Characters in Fate/Grand Order (Part 2) 
Category:Heroic Spirits
Category:True Neutral Servants
Category:Human Attribute Servants
Category:Chinese Servants
Category:B rank Strength Servants
Category:A rank Mana Servants
Category:A+ rank Luck Servants
Category:C rank Agility Servants
Category:C rank Endurance Servants
Category:B rank Noble Phantasm Servants
Category:Humans
Category:Introduced in 2019
Category:Summoned by a Noble Phantasm
Category:Romance of the Three Kingdoms (topic)