Saiko-chan

> "Maybe I should cut your tongue... or should I go kill that boy you talked to?"
>
> Saiko in the intro cutscene in Normal/Hard mode.

## Saiko-chan

* Normal/Hard
* Normal/Hard (Clean)
* Yandere
* Yangire (Old, 2.1)
* Yangire (Current, 2.2)
* Yangire (New, 2.3) (Upcoming)
* Nightmare (Upcoming)
* Nurse (Upcoming)
* Maid (Upcoming)
* Halloween/No Shiki

### Aliases

Saiko, Sayaka-chan (© Satsuki)«Deviant» (© Shinji)

### Relatives

* Hatsune Elissu (Childhood Close Friend)
* Shinji (Enemy/victim)
* Akira (Love Interest/crush)
* Kisho Himura (Father)
* Ichikawa-San (rival/probably victim)
* Satsuki Omehara (stepmother/guardian)

## Biographical information

### Place of death

• School (Good Ending in Easy/Normal/Hard Mode)• Forest (Good Ending in Saiko no Sutoka no Shiki)

## Physical description

### Species

Human (Yandere, Normal and Hard Mode)Demon (Yangire Mode)
Ghost (Nightmare Mode)
Zombie (Halloween mode/No Shiki)

### Eye color

* Red/Pink (Normal/Yandere/Hard)
* Red (Yangire Mode)
* Black (Nightmare Mode)
* Varies on any eye color (Halloween Mode/No Shiki)

## Appearances

### Appears in

Saiko no Sutoka, Saiko no Sutoka no Shiki/Halloween Edition

### Debut

Saiko No Sutoka 1.1

**Saiko-chan**, also known as **Saiko** (最子) and real name **Sayaka Himura** (火村 さやか, *Himura Sayaka*), is the titular antagonist of *Saiko no Sutoka, but a supporting deuteragonist in the Halloween Spin-off.* She is a high school student who has an obsessive relationship with Akira, the main protagonist.

## Background

Saiko was born into a wealthy family and has loved everything connected with rabbits since she was a child. She lived in a large mansion with her biological father. As a child, Saiko witnessed a massacre by her dad who stabbed a man to death in his home. He was taken into custody and sentenced to compulsory treatment in a psychiatric hospital and little Saiko-chan was placed under the care of Satsuki Omehara, her foster mother, who treat Saiko dismissively. At the moment, Saiko's father is still in asylum  and Saiko lives with her foster mother/stepmother in an apartment building. Probably Saiko doesn't have any other relatives

As time went on, Saiko began to experience bouts of DID as a teenager as a result of the psychological trauma and (probably) stepmom's neglect over years.  At the time of the events of the prologue (the fourth and fifth parts), Saiko hasn't completely lost her mind yet, but subsequent events already show her unstable psychological state. As a child, she also meets(?) Hatsune Elissu, who becomes her close (and maybe only) childhood friend. Saiko went to another school in town, and in high grades she transferred to a new one.

## Personality

It has often been implied in the game that Saiko has a split personality that divides her into two states:

* Yandere/"Normal" personality, aka "Sayaka". It's a Saiko's original/main personality from birth. Saiko is a modest girl with low self-esteem and self-doubt, but also kind and loving. She also cannot stand up for herself in moments of bullying. In the spin-off, Saiko's "evil" personality is completely omitted, allowing a glimpse of Saiko's "true" personality (a kind girl willing to sacrifice herself for her lover). However, the bullying and lack of communication experience also took a toll on Saiko-chan's personality. She has no concept of "personal space". She doesn't prevent her second personality from killing Shinji for revenge and doesn't regret about his death, believing that he deserved it. And she will also be ready to allow an "evil personality" or personally kill the main character if he often annoys her.
* Yangire personality, aka "Saiko". This is the second personality of Saiko, which arose as a result of psychological trauma from childhood. Unlike her "neighbour", Yangire Saiko is a bloodthirsty psychopath who likes when someone suffers. Initially, she was a "passive" personality, but over time she began to dominate Saiko more and more. It manifests itself under any stress on the part of Akira and the surrounding people (It is she who directs the murder of Akira and Shinji). In Yangire Mode, Saiko only takes on her "evil" side, and her main personality is completely suppressed, allowing her to be seen only as a maniac psychopath,who likes play with victims before they will be killed. She acts decisively and is ready to instantly kill the Akira, but if player calm her down, Yangire quickly "turns off"

Saiko's "split" behavior could be interpreted in a few different ways. But The he most likely reason is that Saiko really suffers from Dissociative Personality Disorder.

## Relationship

### Satsuki Omehara

Satsuki is Saiko's guardian, however she is dismissive of the girl and sees her as maid. Sa refusing to even wash the dishes herself or stand up for a beer herself. Saiko does all the housework in Satsuki's place while the latter watches TV, smokes, or drinks beer. It is likely that this behavior is a habit of the wealthy life that Satsuki once had.

### Kisho Himura

Saiko is Kisho's biological daughter.  The man sincerely cared for his daughter, bought her toys and spent time with her.  However, after a certain time, Kisho brutally killed someone in front of his daughter, after which he was captured by the police and sent to a psychiatric hospital for several years. Saiko stayed with Satsuki.

Their relationship is currently unknown.  It is unlikely that Saiko interacted with her father after the tragedy. However, Saiko still plays with the rabbit her father gave her. Kisho has the photo of his young daughter in asylum.

### Akira

Saiko fell in love with Akira at first sight when he helped her up off the floor.  As a result, Saiko began to stalk Akira. Her obsession with Akira reaches the point of fanaticism. She has pictures of him all over the walls in her room.  In her diary, she only wants to date with him, dreaming that he would notice her.  She also idializes Akira, saying "Senpai would never lie to her"

Saiko is afraid to approach Akira and talk to him normally, preferring to follow him.  In the teaser for part 10th, Akira himself tried to talk to her, but Saiko was scared of him

This intense obsession with Akira causes Saiko to gradually become mentally broken and increasingly dominated by her "evil personality" who tries to kill the "source" of her problems.

Sayaka loves Akira very much and wants him to spend time with her.  She is also selfless and without selfish goals rush to save her crush.  In the spin-off, she sacrifices her life and her ability to escape for the safety of her senpai.  She will lunge at Yui and try to protect Akira from the antagonist in case of danger.

However, Saiko will not tolerate Akira's insubordination and disobedience.  She will immediately switch to the "Yangire" state and will ruthlessly kill the him.  If the player upsets Saiko too often, her Yangire state will completely dominate her most of the time.  Saiko will also get angry if Akira doesn't accept her gift, tries to run away, or sees him with a diary.  In a bad ending, after a failed escape attempt, Saiko kills Akira without regret, saying that he disappointed her.

Such insanity is caused by a clear lack of attention from the stepmother, loneliness, the psychological state of Saiko and bullying by Akira's best friend

### Shinji

Shinji started bully Saiko after he discovered about her obsession. Firstly he tried to scare away her from his best friend, but then Saiko became his frequent target for bullying. In her diary, Saiko mentions Shinji, wishes for him to die, and states that Akira needs to be rescued from Shinji. It is likely that she had long planned to kill the bully, which in the end she succeeds.

### Yui

Yui is Saiko's rival, since Akira fell in love with her. She probably was killed by Saiko before game's events happened

### Elissu

There are nothing to tell about them. Although Elissu being listed as Saiko's childhood friend, there is no information about their relationship.

## Name origins

Saiko-chan's first name is play on term "psycho," referring to her as a crazed maniac, and psychotic personality. "Saiko" is also an actual Japanese name. The kanji in her name 最 (sai) combined with 子 (ko) translates to "the greatest child".

On September 11, 2022, ImaginationClash announced on the official Discord channel of the game that her real name is Sayaka. From Japanese, it signifies as "a bright flower".

## Appearance

In Normal Mode, Saiko appears to be a high school student with short, unkempt auburn hair with scarlet glowing eyes. She wears a white buttoned shirt with a pleated purple skirt that has blood all over including on her face, arms and legs and goes barefoot. She also carries a bloody knife.

In Yandere Mode, she appears to be more normal looking. Her (now red) hair seems longer and neater wearing it in low pigtails, wears round glasses, a yellow vest underneath a white shirt along with a purple skirt and black loafers.

In Yangire Mode, her appearance seems slightly similar to Normal Mode except she wears a black bunny costume with a bloody grin smeared around her mouth. Her eyes and the smeared grin appears to be glowing brighter and creepier too. She's a lot more muscular compared to her normal counterpart.

In Nightmare Mode, her appearance is similar to Normal but includes the fact that her sclera is completely pitch black but her scarlet red eyes remain the same except it is far brighter. Blood is seemingly coming out of her eyes and her body is covered in glass shards. Notably enough there is a scar residing within her stomach in which she was impaled by the glass shards during the good ending where she dies. This mode is the trigger of Akira’s PTSD and his Nightmare as the title of the game mode may suggest. Akira’s nightmare manifests a supernatural form of Saiko after the incident thus explaining the abnormalities within her appearance. She's also somewhat darker than Bunny Saiko from Yangire Mode.

Being controlled by her Yangire personality, she acts like a psychopathic murderer, manipulator, and has a taste for seeing someone suffer. Her sadism also comes around when she feels the need to “punish” Senpai after being angered by him running away. Despite her love for him, Saiko seems to enjoy putting him through pain. On occasions, she gives a false sense of security to the protagonist in order to trick and hurt him. An example of that is when she pretends to be guilty of her actions and offer “Medicine”. Though at times she does actually give medicine, she can also offer a fake that will lower the Protagonist’s health.

However, when she is calm, she is kind and loving, offering medicine to the protagonist after injuring him and claiming she is sorry. When that happens the player will have to be careful to trust her, as she is faking it sometimes. When her feelings are genuine, she will refrain from attacking the protagonist.

In Normal Extreme Yangire, Prior to 2.2.7, It was impossible to win RPS against Elissu, Forcing you to get the bad ending as always. However in 2.2.7, You can now get both of the endings with a 50% chance of winning and a 50% of losing.

## Observation

As the updates on Saiko A.I. go, the more blurry the border between Saiko Personalities is.

* Both personalities seem to adopt traits of one another: Her "tame" personality often acts violent, choking Akira to lock him in the rooms and intentionally poisoning the Healing Pills that she provides to him. While her "good" personality poisons him to sleep, "evil" one is using a deadly poison
* She instantly switches to her "Yangire" personality, when Akira is attempting to peek under her skirt. If "Yangire" catches him doing it, she insta-kills him.
* In the contrary, sometime her "Angered" personality can show strange signs of mild companion, as she often gives 5 seconds to escape, accept to give up on her chase if Akira wins her shifumi round, and stops her assault as Akira gives her the Diary. However, this might be made out of sadism, prolonging her "Cat and mouse" game.
* Sometimes, she does **physically** fakes shifting back into her "Tame" personality (when she is petted to be calmed down, when she provides fake medicine and at random when the Diary quest is completed). However, you can tell, if she is faking or not by looking in her eye's: "good" Saiko have a pink eye's, while the "bad" one - red ones.
* She becomes permanently "Angered" as a result of being repeatedly pushed or injured by glass. Her appearance when she is injured to many times is also changes.

BeforeAfter
* In Nightmare Mode, she will rip out Akira's heart if he refuses to kill Shinji.
	+ She can also morph into anyone, including Akira himself in the mode as well.

## Trivia

* It is not actually clear If Saiko plans to commit suicide if Akira will escape or she plans to do it after murdering him. Her overall disregard at leaving evidence behind such as destroying school equipment, poorly hide her misdeeds, letting live CCTV cameras film herself wandering around the school blood-drenched and probably leaving her own blood and fingerprint everywhere in the weapons and off-limit equipment seems to indicate she doesn't plan to get away with it as covering up everything would be impossible within a single night alone.
* The nickname "Saiko-chan" may also be a reference to Alfred Hitchcock's "Psycho", where the main antagonist also suffers from a dissociative disorder and kills people under the influence of his second personality, "mother".
* Perhaps the nickname "Saiko-chan" was given to her by students at school for her obsession with Akira and her abnormal behavior. «Saiko» sounds the same as "Psycho"
* Nightmare Mode poster may refer to the ending of film "Shutter"
* Voice actress Saiko is Indonesian.
* In 2.1, Saiko and Elissu used to have black eyes in Yangire Mode. But in 2.2 and above, Her and Elissu's eyes are white rather than black.
	+ A lot of people in the SNS discord server love the black eyes a lot more than the white ones because it fits to their demonic bunny appearance.
* Saiko can change into maid and nurse outfit (although it's just for Android and IOS)..

## References

1. ↑ Message on Youtube.
2. ↑ https://www.youtube.com/watch?v=3RCchoigZoY
3. ↑ https://www.youtube.com/watch?v=XCLTP\_eDj0E
4. ↑ v2.3.4 preview by Brick Shooter
5. ↑ Confirmed by Habupain