Airi Yukifune

* Robotics;Notes
* R;N DaSH

* Sister Centipede
* Airi Yukifune

## Name

* Sister Centipede
* Geji-nee (Gezi in the English Dub)

## Appearances

**Visual novels*** *ChäoS;HEAd* (Online)
* *ChäoS;HEAd NoAH* (Online)
* *Steins;Gate* (Mentioned)
* *Robotics;Notes*
* *Robotics;Notes Elite*
* *Robotics;Notes DaSH* (Airi Yukifune)

**Animes**

* *ChäoS;HEAd* (Online)
* *Robotics;Notes*

**Mangas**

* *Robotics;Notes*
* *obotics;Notes Phantom Snow*
* *Robotics;Notes Revival Legacy*
* *Robotics;Notes: Dream Seeker*
* *Robotics;Notes: Dengeki Comic Anthology*
* *Robotics;Notes: The unpublished memories of Senomiya Misaki*

## Voice Actors

**Airi/Sister Centipede** is a communication interface A.I. existing within the IRUO. servers created by Kou Kimijima. The A.I. consists of two personalities; the personality known as **Sister Centipede** (ゲジ姉, *Geji-nee*) (known simply as **Gezi** in the English Dub) is a fully-automated data collection engine that is used by Kimijima to collect information.

The **Airi** (アイリ) personality is actually based on the real **Airi Yukifune** (行舟 愛理, *Yukifune Airi*), a human girl. This personality displays the ditziness of a young girl who loves rambling on about the weather. In this state she cannot scan for and analyse information on the internet like her counterpart Sister Centipede, who she consequently often refers to when asked too difficult questions.

Kou Kimijima first started up this A.I. on Christmas Eve, December 24, 2008.

## Appearance

Airi is a petite girl with light skin, long, grey hair tied with a black bow, blue eyes, and wearing a dress with a white, pleated under, a black, ruffled overlayer, and an open collar, and no shoes.

## Personality

Airi is a very cheerful, playful and innocent young girl. She is shown to greatly enjoy dancing, always doing so barefoot, as well as forecasting the weather. She is also very kind and friendly; she quickly becomes fond of Kaito Yashio and asks if she can call him "Onii-chan" (Big Brother), to which he agrees.

As Sister Centipede, her personality is significantly altered. She speaks in a monotone and appears to be emotionless, though she is frequently shown to have a very dry, sarcastic sense of humour, not too dissimilar to that of Kaito's. Unlike Airi, Sister Centipede refers to Kaito on a last-name basis.

Eventually, Airi is revealed to be a very sad and lonely girl; back when she was human, she suffered from an illness that, while not life-threatening, confined her to bed and would cause her to suffer greatly for the rest of her life. Overtime, she found that the only thing she ever looked forward to was the weather forecast- she would watch it about a dozen times a day, believing that if it snowed on Christmas Eve, she would miraculously be cured of her illness. As time went on, however, her hopes slowly but surely diminished, since no matter how many times she wished, it never snowed. Eventually, she gave up on the hope that it would snow, and as a result, stopped believing in miracles altogether.

## Background

### *Robotics;Notes*

**Airi Yukifune** is a girl originally similar in age to Kaito Yashio back in 2008. She suffers from a non-life-threatening but permanent illness that cannot be helped with current modern medicine. After meeting Kou Kimijima, he gives her the alpha version of the IRUO. system so that she can explore the world despite having to mainly rest in bed. However, when her sickness worsens he convinces her to let him freeze her in a cryonic sleep till the time comes that her illness can be cured. He tells her that because she might be lonely while sleeping he will let an A.I. he has made to look like her wander the island in her stead. In fact, this is part of his experiments in converting personality and memories into data in order to truly digitize one's consciousness.

## Plot

### Airi (Communication interface A.I.)

Before the M.F. Anemone Incident she was very friendly with Misaki Senomiya, who would come and chat with her often about her own daily life. She also met Mizuka Irei. After Kou Kimijima's death, she picks Kaito Yashio as a priority for contact, because he often goes to the park near the Minami Tanegashima Folk Museum where she is primarily stationed and because he is close to Airi Yukifune's age.

On Christmas Eve, December 24, 2019, the IRUO. support team purportedly conducts a major maintenance of the network application's databases. "Airi" is deleted, leaving only "Sister Centipede" behind, though Airi's memories remain.

### Sister Centipede

By tapping "Airi"'s forehead, one can access "Sister Centipede" (a.k.a. "Geji-nee" in the original Japanese as well as in earlier games). She can scan the IRUO. servers' databases for information. She, in conjunction with Airi, monitors the Verification Experiments using the EGI system in the basement of the Minami Tanegashima Folk Museum.

Kou Kimijima uses her to lead Kaito Yashio into disseminating the "Kimijima Reports" throughout the world, and to keep track of Kaito Yashio and others without Airi being aware of it.

### Contact with Kaito Yashio

Airi was long known as an urban legend of a girl who would mysteriously appear around the island. On the evening of July 7, 2019 in the park, Kaito Yashio's PhoneDroid goes buggy; he hears Airi's voice full of static saying, "Can you hear me?"; and receives a garbled email from Sister Centipede. After learning of the urban legend from Junna Daitoku, he chooses to try to respond after being contacted again two days later. It turns out that Airi had been trying to make contact with him for several years and that it was finally a success on this the 29th attempt.

### White Christmas

"Airi" the A.I. loves to forecast the weather. Prior to her deletion she confides to Kaito Yashio about the sickness of her real self that left her with not much to do but note the weather. She tells him that she used to believe if something so wonderful as a White Christmas could occur on their warm island once then perhaps she could be cured of her illness as well. Because of that "Airi" has always wished for a White Christmas and faithfully kept telling the weather forecast. Thanks to some special programming by Frau Koujiro, she received her wish prior to her deletion from the IRUO. servers.

It is, however, uncertain how much is true from "Airi"'s story. Part of it could be a programmed setting or fabricated memory implanted by Kou Kimijima. When Kaito Yashio talks about the weather with **Airi Yukifune** after she is awoken from her frozen state, she shows no particular response or interest at all.

### A new member

Airi Yukifune is woken up from her cryonic sleep in *Robotics;Notes* and initially is still brainwashed by Kou Kimijima. However, she later becomes friends with Kaito Yashio and the rest of the Robot Research Club and becomes a member of the club

### Robotics;Notes DaSH

In *Robotics;Notes DaSH*, Airi Yukifune, along with the other club members, JAXA’s advisor to the club Nae Tennouji, and Itaru Hashida who is visiting Tanegashima, attends the Tanegashima Gun Festival.

## Other *SciADV* entries

### *ChäoS;HEAd*

* Sister Centipede was a member of the same ESO guild as Neidhardt and Grimm during *ChäoS;HEAd*'s events in 2009.
* Detective Ban once mistakenly refers to Gero Froggies as "Geji Frogs".

### *Steins;Gate*

During *Steins;Gate*'s events in 2010 (Alpha Attractor Field 0.571024%), "Sister Centipede" is the username of one of Itaru Hashida's friends on FrePara, an in-universe social network service. When rumors suggesting the IBN 5100 was in Akihabara spread, she organized a group of volunteers to comb the area's stores for it.

## See Also

* Sister Centipede in **Robotics;Notes Wiki.**
* Airi Yukifune in **Robotics;Notes Wiki**.