Bibi

***WARNING!!***
***This article contains spoilers for*AI: THE SOMNIUM FILES - nirvanA Initiative *from this point on.Proceed with caution!***

## Name

### Alias

  **Expand**

 \*Masked Woman (仮面の女)

## Personal Status

### Appears in

* *AI: THE SOMNIUM FILES - nirvanA Initiative*

A mysterious woman, known as **Bibi** (ネエネ, *Nēne*) or the **Masked Woman** (仮面の女, *Kamen no On'na*), is a main character in *AI: THE SOMNIUM FILES - nirvanA Initiative*.

Bibi is a mysterious person who saved Mizuki Date during her investigation in the Half Body Serial Killings. Bibi claims she had been privately running an investigation on the genome research that was being done at Horadori Institute of Genetics. She claims her mask is glued to her face using a special super-powerful glue.

The true nature of the character can be found down below, past the spoiler banner for *nirvanA Initiative*. Please only proceed if you've cleared the game, as there are **MAJOR SPOILERS below.**

## Mizuki Kuranushi

* 24yrs
* 18yrs
* 18-24yrs (Masked)

## Name

### Alias

  **Expand**

 Bibi (by Mizuki and Ryuki)* Big Sis/Big Big Sis (by Kizuna)
* Quartz (by Lien and the Kumakuras)
* Kuranushi (by non-ABIS acquaintances)
* Masked Woman (disguise)

## Characteristics

### Age

* 18 years old (Past)
* 24 years old (Present)

### Eye color

* Gray (right eye, biological)
* Yellow (left eye, Aiba)
* Cyan (left eye, Marco)

## Personal Status

### Status

**Resolution Routes:*** Alive

**Alternate Routes:**

* Alive

### Residency

* Tokyo, Japan
	+ Aioen Orphanage (Birth-9yrs)
	+ Chieda Residence (9yrs-15yrs)
	+ Kuranushi Residence (15yrs-present)

### Affiliation

* Aioen Orphanage (original home)
* Sekiba High (former student)
* Tokyo Metropolitan Police Department
	+ Advanced Brain Investigation Squad

### Occupation

* High schooler (2017-2020)
	+ Senior (2019-2020)
* Kumakura Thief (Prior to 2020)
* ABIS Undercover Special Agent
	+ Psyncer (2020-onward)

### Family

* Mizuki Date (clone)
* Shizue Kuranushi (adoptive mother)
* Grandpa Kuranushi**†** (adoptive great grandpa)
* Riichi Chieda (former foster father)
* Kizuna Chieda (former foster sister)

### Associates

ABIS Coworkers:* Futa Amanoma
* Kaname Date (Psyncer)
* Kuruto Ryuki (Psyncer)
* Marco (AI-Ball partner)
* Aiba (AI-Ball; former partner)
* Tama (partner)

Other:

* Moma Kumakura (former boss)
* Lien (criminal partner)
* Mama (informant)
* Iris Sagan (alumnus)
* Amame Doi (alumnus)

### Talent/Skills

* Guessing Which Panties Mizuki Date Is Wearing That Day

### Appears in

* *AI: THE SOMNIUM FILES - nirvanA Initiative*

## Actors

### English VA

* Corina Boettger

**Mizuki Kuranushi** (暮主 みずき, *Kuranushi Mizuki*), nicknamed as **Bibi** (ネエネ, *Nēne*) by Mizuki Date, **Quartz** by Lien, and the **Masked Woman** (仮面の女, *Kamen no On'na*) when disguised, is the secret third protagonist of *AI: THE SOMNIUM FILES - nirvanA Initiative*.

Bibi is the original human basis for her clone, Mizuki Date, born from her DNA almost like a little sister. Mizuki lived at Aioen with the second Mizuki until she was 9 years old. Mizuki secretly watched over Mizuki Date from afar, watching her grow up.

## Design

As an adult, she wears a long tattered white, pink and red hood, with black tights that cover her legs, torso, arms and hands, with the tights ending in cuffs around her ankles. When acting as the Masked Woman she wear an advanced voice-changing choker around her neck which she uses to disguise her voice, and an upside-down white mask of a woman's face attached to her face with a powerful glue.

As a teenager, Bibi's attire was identical to Mizuki Date's. Her right eye is gray while her left is yellow, and she wears her cyan hair in two thin hip-length braids. Mizuki wears a school uniform with a white collared blouse and red tie underneath a short black dress with 3/4 length sleeves. The dress also features four buttons alongside two pleats down the front, a bow on the backside at the waist, and an emblem on the left sleeve with the letters "SJ" next to two feathers. She also wears a cropped yellow hooded jacket with red trim and gray lining, and short black gloves. Mizuki's tights and shoes are black, and the shoes include X-shaped yellow accents that match her jacket. The only difference between her and Mizuki Date's attire at this age is that she lacks a scar on her leg.

## Personality

While acting as the Masked Woman, she acts very aloof and detached, and is generally very resistant to attempts to get more information out of her by way of deflection and avoidance. She takes on this persona to conceal her identity from Mizuki Date in an effort to protect her from the truth that she is a clone (as to not get involved with the Horidori Institute), as well as to prevent her clone from getting involved with the HB Case. She is even willing to attack her to prevent her from getting involved with danger. She drops this act once it's apparent that she cannot hide the truth any further

As the genetic template of Mizuki Date, Mizuki Kuranushi, or Bibi's personality is very similar to that of her younger clone's. She is brash, confident, independent, and willing to bend the rules to accomplish her goals, taking on a somewhat grey view of justice. She is also just as rebellious and bratty as Mizuki Date, as indicated by her interactions with her adoptive mother, who she sees as embarrassing and lame (mirroring Mizuki Date's relationship with Kaname Date.) The two also share a similar sense of humor, mischievous nature, snarkiness, and general distaste for Date's foolishness. The two even have very similar tastes in fashion, wearing downright identical outfits when they were both 18. Bibi is also naturally protective of others and is determined to do whatever it takes to protect them, particularly her adoptive mother, Lien, Kizuna and especially the younger Mizuki, whom she regards as a younger sister. Her deepest wish is for Mizuki to live a normal life, something that Bibi herself was deprived of due to her deeply traumatic time at the Horidori Institute, as well as her medical conditions.

Much like her clone, Bibi has suffered through much hardships in her life, but what Bibi suffered through was considerably more physically traumatic and recent compared to Mizuki Date's emotional trauma; Bibi considers Mizuki to be lucky to not have any living memory of her time at Horidori Insititute. This trauma has left her angry and bitter, greatly wishing to bring the people responsible to justice. She is more jaded and mistrustful when compared to her younger counterpart, and is generally less forgiving as Mizuki Date, and tends to hold grudges more (at least by the time the two formally meet). However, despite her darker personality, she shares her clone's strong moral compass, indicated by her refusal to rob anyone but the rich during her time as a thief. Much like her clone, when Bibi was 18, she had the tendency to be a bit vain, viewing herself as being attractive and charismatic despite her otherwise violent and even brutish demeanor. As an adult, Bibi is less outspoken than her clone, being calmer and more of a deadpan snarker.

Ironically, despite her checkered and traumatic past, Bibi may have enjoyed more of a stable home life compared to Mizuki Date, due to her happy time while living with the Chiedas, and comfortable life with Boss (unlike Mizuki Date who suffered from parental abuse until she was 9 and was left without any official guardians when she was 12 due to their death or disappearance). Unlike Mizuki Date with Kaname Date, Bibi fully accepts Boss as her mother figure, outright calling her Mama (this likely due to Mizuki Date having a living memory of her own "parents".)

## Story

### Background

At some point in her past, Mizuki's DNA was modified at Horadori Institute of Genetics to give her superhuman abilities, but the genetic rewrite resulted in her being born blind in her left eye and with a heart condition (which she takes medication for). Mizuki was sent to live at Aioen Orphanage, but would occasionally be taken to Horadori Institute for "examinations". In reality, these were inhumane experiments in which Chikara Horadori tortured her to observe her body's response and rate of healing. Such experiments included forcefully breaking her bones with a clamp and being administered nerve gas. When Mizuki was 6 years old, a clone of her who was also named Mizuki had began living at Aioen. This younger Mizuki's DNA was slightly altered, giving her the same physical prowess but without the disabilities that her original had. Because they had the same name and looked nearly identical, the older Mizuki was nicknamed **Big Sis**, while the younger one began referring to her "older sister" as **Bibi**. From this moment forth, Bibi developed a sisterly love for the younger Mizuki and vowed to protect her at all costs. As suggested by Bibi's somnium, she went to great lengths to protect Mizuki from Chikara's torture, resorting to physically assaulting him and forcing her body between Mizuki and an electric drill in order to break it.

When Bibi was 9, Horadori Institute was shut down thanks to Riichi Chieda's intervention. Around the same time, Bibi was adopted by the Chieda family, becoming known as **Mizuki Chieda** and Kizuna Chieda's sister. Although Kizuna was slightly older than Bibi, Kizuna would still refer to her as Big Sis due to her maturity. At the age of 15, Bibi was adopted by Boss and changed her legal name to **Mizuki Kuranushi**. Boss trained Bibi to join the police force, to which Bibi would meet Lien Twining and help him out under the identity of **Quartz**. Bibi eventually joined ABIS and was to be partnered with a newly created AI-Ball named Marco. However Marco was incomplete and Aiba had recently left Kaname Date, so Aiba was partnered with Bibi. At some point, she visited Moma Kumakura and borrowed his voice changer.

### Six Years Ago

On February 11, 2020, Bibi was given a prognosis on her remaining life expectancy. On a "secret mission" as her adoptive mother Boss explained it, Bibi began to take over the investigation of the Half Body Serial Killings after its initial investigator Kuruto Ryuki was deemed "unstable" by Boss, starting with the discovery of Chikara Horadori's left-half at Yoyagi Park on February 12. There, Bibi found a challenge by Tearer to find three balloons that he scattered throughout the city. Upon finding two, Bibi encountered Gen Ishiyagane at the warehouse district, who had been there since 8am and did not see any of Tearer's balloons. After receiving a call from Boss that a balloon was spotted at the warehouse district at 8:30am, Bibi confronted Gen for lying and found the third balloon in his trash can. Each of the three balloons contained a note that led to large metal door with locks leading underground of Horadori Institute. Having Lien unlock the padlocks, the duo enter a secret passageway underground but do not find anything.

On the next day, February 13th, 2020, Bibi put on a new white cloak, a white mask that she claims is unremovable, as well as the voice changer she got from Moma, and visited Lemniscate Entertainment Offices briefly.

#### R2: Rescue Shoma

In Komeji and Shoma Route, on the 13th, in order to investigate clues of the gene editing, Bibi was tracking the activities of the researchers of the Horadori Institute of Genetics, and found that a large number of researchers were going to the Harbor Warehouse District in the evening, so Bibi hid on the crane there and observed secretly until several people including Ryuki and Mizuki entangled with the researchers there for a while, Bibi joined the fight to rescue Shoma Enda.

After the battle, Bibi and others, led by Kaname Date, gathered at his residence to have a break with everyone.

#### R1/M1: Getting Betrayed

In Explosion Route/Resolution Route, two days later on February 14th, Bibi investigates the appearance of Komeji's left half at Misetan, learning there was a blackout three nights ago for a few hours followed by moans that seemed to have come from a drunken man. Ryuki arrives and tells Bibi that he had Psynced with Komeji, learning that Komeji was the drunken man and that he stole a body Tearer had placed to blackmail him. Later that day, Bibi visits Shoma in the hospital, who was brought there by Ryuki after he saw his father's dead body. Bibi empathizes with Shoma, saying she understood the pain of losing family as well.

That night, Bibi receives a call from Lien saying that Kizuna had gone missing. Using Aiba to track Kizuna's phone GPS to the Kabasaki Chemical Plant, Bibi goes there and encounters Tearer, who has Kizuna's phone and says Kizuna was not here. Confronting Tearer, Bibi is betrayed by Ryuki who shocks her with a stun bullet, which worsens Bibi's heart condition. Bibi learns through a wink Psync that Tearer was holding Tama hostage, which resulted in Ryuki having no choice but to obey Tearer's orders. Tearer also wants Ryuki to lead Date to the "execution chamber", which was where Kizuna was.

From here, Date arrives and shoots an anesthesia bullet at Tearer. As the duo make their first introductions, Date has Bibi Psync with Tearer using the Psync machine at the factory. They discover that Tokiko Shigure and Chikara Horadori had an illegitimate son, Jin Furue, with Tearer himself being shown to also desire the same amount of love Tokiko showed to Jin. After the Psync, Bibi finds Tokiko at the abandoned factory, who confirms everything Bibi saw in the Psync. Tearer shows up, having developed a resistance to anesthesia over time. Date comes out of hiding and shatter's the left side of Tearer's mask, revealing his true identity to be Jin Furue himself. Bibi collapses due to her worsening heart condition. She doesn't return home that night, but Date calls Boss to reassure that Bibi was safe. She collapses at the park the next day on the 15th by Hitomi Sagan and is taken to her home to rest.

### The Masked Woman

In the next six years, Bibi continued to conduct her own investigations into the case, while shadowing her "little sister" to ensure she lived a normal life while staying away from the case. Mizuki eventually joined ABIS and became Aiba's new partner while Bibi was given Marco, who had long since been completed. Wanting to dissuade Mizuki from taking on the HB case, Bibi shoots Mizuki at the stadium to make her stay away from finding Jin's left-half, though the plan failed and Mizuki eventually took over as the lead investigator.

On February 11th, 2026, Bibi rescues Mizuki from being attacked by armed scientists at Horadori Institute. Bibi doesn't elaborate too much on what her motives were, as doing so would risk revealing her identity to her cloned little sister.

The next day on the 12th, Bibi was starring out into the ocean at the warehouse district, where she is approached by Ryuki who attempts to strike a conversation with her. Bibi, knowing that Ryuki tased her six years ago, passively tells him that she doesn't like him very much. Later that day, Bibi rescues Mizuki from being attacked by Naix agents at Ikume Shrine, where they learn of the TC-PERGE and the rocket launch rehearsal. After Bibi experiences her heart pain again, she brings Mizuki to Aioen and tells her about the experiments done on her. Suffering from more heart pain and collapsing, Mizuki brings Bibi to ABIS for a Psync, where Mizuki learns of a certain person that "the masked woman wanted to protect."

#### M3: Help Kizuna and Lien Elope

In Kizuna and Lien Route, during the interrogation room of ABIS HQ, Bibi explained to Mizuki Date some information related to gene editing in the Horadori Institute of Genetics, including that Chikara has completed research on slowing down the aging rate of the human body and applied this technology to Shoma Enda.

The next day, when Mizuki Date finished Psyncing into Lien, Bibi sent her a Wink Psync video of Kizuna Chieda, created by Marco's function.

On February 15th, when Mizuki Date was surrounded by Mercenaries at Aioen Orphanage, Bibi arrived here on her scooter, hinted Mizuki Date to "use Thermo Mode" against the stealth mercenaries and joined Mizuki Date in the battle to repel them. During this time her mask was hit by bullet and eventually fell off, revealing her true face. Mizuki Date was shocked to see Bibi's face exactly like her own; Kizuna and Lien were shocked too about Big Sis/Quartz's sudden presence. After a few simple greetings, Bibi asked Lien to take Kizuna away on the scooter, and told Mizuki Date that she would explain the mystery about herself's identity after repelling all the mercenaries.

#### M1: Stopping the Nirvana Initiative

In the Resolution Route, on the night of February 13th, 2026, the two stop the rehearsal at Misetan, while seeing Ryuki there. Bibi takes the opportunity to punch Ryuki for tasing her.

On the 14th, Bibi was at Aioen looking for clues on when the actual rocket launch was going to happen.

On the morning of the 15th, Bibi meets with Mizuki and reveals her true identity and reveals that Mizuki was her clone, meant to be the "perfect" version of her without the blindness nor the heart condition. The two head to Brahman where they find Date, Lien, and Kizuna, all alive and well. They discuss the discovery of the left-half corpse in the restaurant's freeze, not knowing that it belonged to the real Jin Furue. Date and Bibi then take Mizuki to the cathedral, where they find Uru's right-half as well as Tokiko's documents in the safe, revealing that Tearer is already dead. They show her a secret door to the other side of the cathedral, where the explosion had occurred six-years ago and find Ryuki there lamenting on his past actions. Bringing him back to his senses, they all share information. They knew that the Nirvana Initiative will happen that day at noon, but not where. Ryuki suggests talking to Amame, where they discover in her Psync that she was the one who killed Uru, while Tokiko committed suicide.

By cross-referencing all of the locations that the bodies were found, they find that the Nirvana Initiative was happening at the stadium. They head out to stop the Nirvana Initiative while facing goons from Naix, Horadori, and several mercenaries Uru hired. As the rocket containing the TC-PERGE launched, Bibi and Mizuki use their bikes as well as Shoma's thermite bombs to destroy the rocket and the virus for good.

One week later on the 22nd, Mizuki and Bibi are told by Boss that Ryuki had died during the battle at the stadium. However, she sends them on a scavenger hunt across the city where their friends held clues to a location of a gift she had prepared the girls. During their clue hunt, the duo went to Marble where Mama said that something was waiting for them at Naix Japan. The two go to Naix Japan where they see a hologram of Tokiko, who gives "the frayer" a Nil Number. Though they did not understand what that meant, they knew it didn't have anything to do with Boss' gift. After deducting the clues, they head to the stadium where they are met with the surprise of Ryuki, who had survived but was still relatively injured.

## Gallery

Bibi's profile from Present, in nirvanA InitiativeMasked Woman's profile from Present, in nirvanA InitiativeBibi performs her task in the Kabasaki Chemical PlantBibi revealed her true faceBibi and Kaname Date who wears Gen's outfit
## Trivia

* Despite her and Mizuki Date never meeting until Mizuki Date was 18, the two shared a lot of mutual friends and acquaintances, even prior to Mizuki becoming a member of ABIS. These connections include: Moma and the Kumakuras, Lien, Kizuna, Riichi, Boss, Pewter, Date, Ryuki, Tama, Aiba, Gen, Shoma, and Amame.
* Although there are numerous hints towards her identity as a secret third protagonist (specifically being the "Mizuki" during the past sections), the strongest hint is that while Mizuki Date has a bullet wound scar on her leg, Bibi does not.

## Navigation

 Locations | **Tokyo**
*Chiyoda District*: Police Headquarters (Boss's Office, Psync Room, Interrogation Room) • Sunfish Pocket • Sekiba High
*Chuo District*: Horadori Institute of Genetics (Underground, Hostage Room) • Naixatloz Japan Branch (President's Office, Cathedral)
*Koto District*: Harbor Warehouse District • Date Residence
*Minato District*: Studio Dvaita • Aioen Orphanage • Ikume Shrine • Kumakura Office • Sejima Residence • Central Hospital
*Shibuya District*: Lemniscate Entertainment Offices • Yoyagi Park
*Shinagawa/Kabasaki District*: Matsushita Diner • Sagan Residence • Enda Residence • Kabasaki Chemical Plant
*Shinjuku District*: Golden Yokocho (Marble, Brahman World Cuisine) • Misetan Department Store • Tokyo National Stadium
**Side Ryuki:**
Dispossessed • Anyone Imagines • Ought to Know • Nothing to Be Done • Go • Farewell
**Komeji and Shoma Route:** Joy for Anguish • I Found Me • Past Its Ken
**Explosion Route:** Smiles for Tears • Well-Known • The Mind of God • Not All A Dream • She Was the Universe
**閭｡陜ｶ荵句､｢邱ｨ Route:** 遐ｴ邯ｻ逋ｾ蜃ｺ • All This Happened, More or Less
**Side Mizuki:**
Alone • Pass Mildly Away • End Where I Begun • Traveler • Left Behind • The Expense of Spirit
**Gen and Amame Route:** All Living Things • Of Arms and Of Man • Who's There • All That We Are
**Kizuna and Lien Route:** Bid the Soldiers Shoot • Sweet Silent Thought
**Resolution Route:** Hell • Visions • In Truth • Births • The End of Craving • Braver Than All Flowers