Ai-chan

* MMO
* Anime (S1)
* Anime (S2)

**Ai-chan** (*アイちゃん, Ai-chan*) is the main character of the *Getsuyoubi no Tawawa* series. She is a high-school student who is famous among the boys at school mainly for her large breasts. However, one random encounter with a horny salaryman begins a story of teasing and popped buttons.

## Appearance

Ai-chan is a 2nd year high school girl standing at 149 cm and weighing 50 kg. She has brown hair which she styles in a bob cut, but keeps two strands of her hair in braids which she keeps behind her ears. When not wearing her school uniform, she is often seen wearing a sweater and pants at home. During her middle school days as a class representative, Ai-chan had much longer hair, and arranged them into two ponytails on either side. She also wore glasses back then, and currently only wears them at home.

Onii-san has commented that Ai-chan's looks would be appropriate to describe "youth taking a corporeal form", and her best friend Volley-bu-chan has seen how Ai-chan has taken the interest of the boys at school while incurring the jealous comments of the girls.

Like her mother, she also has curvy body that often gets her a lot of attention. Her breasts are very large for someone of her size and age, and are the main obsession of several characters through out the series.

## Personality

Despite her looks, Ai-chan has struggled with making friends at school. Because of the impressions people make of her, she tends to spend time in the classroom reading a book if she's not busy turning down a confession. However, she has showed a playful, almost mischievous personality when with people she is comfortable with, particularly the Salaryman, and is capable of showing a wide range of emotions as a typical girl her age. She also has a complex towards her figure, noticing that her bust size keeps on growing over time while staying at her current height.

## History

###### Manga

On a Monday morning, Onii-san, a depressed salary-man, is waiting for a train on the platform when Ai-chan, a schoolgirl, come running to him, She greets him, showing somewhat of a connexion between the two. Onii-san then recall how they met. On an another monday, both were squeezed against one another in an unusual crowdy train. While Onii-san tried to maintain composure with the pressure of Ai-chan's imposing chest against him, he accidentaly drops his business card on her. Afraid of being considered as a pervert, he flees but Ai-chan comes after him to give back his card. Doing so, she falls breast-first on him on the train station's stairs, sending him for a short period of time at the hospital. From then, the two developped a relationship where Ai-chan reveal her nickname to him and agree that Onii-san while act as her bodyguard on monday mornings in the train. Back to today's time, Ai-chan notices that Onii-san is always depressed and consider options to cheer him up. Remembering how they met, she hands him a button and whispers to him that they popped from her shirt last week. While Onii-san is subjugated at her beauty and amazing chest, she announces that she's becoming "Jay-chan". Poiting at her massive bust, Onii-san understand that "Ai-chan" was actually a play-on-word on her supposed bra size (I-cup) and that she actually grown to fill a J-cup bra.

On an another monday, Ai-chan meets Onii-san again who calls her by her new nickname "Jay-chan". She replies that she'll prefer to stick with "Ai-chan" as she had a tendency of changing her nicknames quite fast, hinting at her growth. Onii-san notices she had changed her uniform tie for a ribbon which Ai-chan seems very happy about. However this reveals the gaps in between the button of her shirt as it struggles to contain her imposing bust. Onii-san asks why she does not button up her jacket to which Ai-chan invites him to try to button it for her. Purposely, she mischeviously stick out her huge chest to trouble him and make his task more difficult. Ai-chan is shown to enjoy the situation a lot and teasfully look at him when he managed to button her jacket as her chest is shown to be on the edge to tear her jacket apart. Ai-Chan explains that she cannot wear a larger jacket as her small figure does not allow her to do so. Finally, she entices Onii-san to unbutton her jacket as she's feeling tight in it. Onii-san is shown to let himself go, on the point of undressing her, mesmerized by her assets. Ai-chan seems to be amused, jokingly grinning at him. They both agree that a necktie would actually better and Ai-chan asks him to tie it around her neck, redoing the same trial as before.

On an another monday, Ai-chan is shown to have somewhat of a friendly conversation with a male of her age, apprently being hit on. Onii-san is shown to express a great jealousy on him, afraid of losing her "angel". In the train, while Onii-san shows no bound to his praise on Ai-chan, dreaming what his life would be if he was younger with her, he's shown to not actually listen to her, something she'll grow annoyed with during the trip. She hands him over a new button she had popped previously and acknowledge his jealousy and fear she'll go with someone else. However, on the topic of she previously had relationships or if she's still a virgin, she decides to keep it as a secret "for now". Not to end on a bad note, Ai-chan makes Onii-san notice that the button is shaped differently. She reveals to him another secret : even though it is not allowed by her school's regulation, she's actually a part-time waitress in a bakery store. The button was actually one from her uniform that she describes as "not very functional" hinting that more designed on emphasizing the size of her breasts than anything else. She entices him to go see her at the bakery store. Going out of the train, Ai-chan is shown to actually be very fond of Onii-san and waits for him every Monday just like him.

Onii-san eventually goes to her store where he's greeted by Ai-chan wearing her uniform. She acts as he was an unknown customer and show him around. All the girls in the bakery wears the same uniform, emphasizing on their breasts. While Onii-san tells her that she'll tell her when he'll know what to order, Ai-chan is shown to be quite upset by it. She purposely bent over the face of another man, exposing her large chest to him just to annoy Onii-san, which worked easily. When Ai-chan eventually serve him, he notices that one of her uniform's button is on the edge of popping and discreetly tell her. Embarrased, she flees to the locker room to adjust her. Onii-san eventually leaves the bakery but Ai-chan comes running at him in the street, her button replaced by a safety pin. She hands him over a package and Onii-san jumps in to express how cute she looked in her outfit and how dedicated she was to her job. She seemed delighted and tells him that a "fresh souvenir has just been made before running back to work. Onii-san finds in the package two big loaf of bread and the button of her uniform that had finally come undone.

## Other Appearances

**Manga**

* Vol 1 - Ch. 1, 3, 5, 6, 7, 9
* Vol 2 - Ch. 10, 11, 12, 18
* Vol 3 - Ch. 19, 20, 21, 22, 25
* Vol 4 - Ch. 30, 31, 34, 36
* Vol 5 - Ch. 39, 42, 44, 47
* Vol 6 - Ch. 49, 50, 52, 53, 54, 56
* Vol 7 - Ch. 59, 62, 63, 65, 66
* Vol 8 - Ch. 69, 70, 71, 73
* Vol 9 - Ch. 79, 80, 81, 82, 83, 84
* Vol 10 - Ch. 89

###### Doujinshi

* Vol I
* Vol II
* Vol III
* Vol VI
* Vol VII
* Vol VIII
* Vol EXTRA
* Vol XIII

###### Anime

* Season 1 - Episodes 1, 2, 3, 4, 5, 7, 8, 9, 10, 12
* Season 1 - OVA 2
* Season 2 - Episodes 1, 4, 5, 6, 7, 10, 11, 12
* Season 2 - OVA 1

## Trivia

* Ai-chan's name is a play on her initial bust size (cup size I) when she was first introduced. In later illustrations, she would eventually reach the cup sizes of J and possibly K. As of the latest size update illustration, her bust measurement managed to reach 100 cm. There are indications that it already grew bigger (101 centimetres as of MMO 388).
* Rumors from the girls at high school speculated that she already had a cup size of F during 5th grade of elementary school.
* Ai-chan works as a part-time waitress at a bakery cafe called Bakery Restaurant Tawawa. Ai-chan asks Sensei if he can keep her job a secret, since her school does not allow students to work part-time jobs.
* Her date of birth is October 5th.
* She has blood type AB.
* In Chapter 70 of the manga, Ai-chan stated that she wants to study hard to become a nurse.

## References

1. ↑ MMO #323
2. ↑ 2.0 2.1 2.2 S2 Website
3. ↑ Manga, Volume 1, Chapter 6
4. ↑ Manga, Volume 8, Chapter 70, Page 4