Komichi Aya is one of the main characters on both the Manga and Anime Kiniro Mosaic. Aya is a tsundere and timid girl who gets embarrassed quite easily. She is a smart student, but has a habit of forgetting things. While Aya is level headed most of the time, she can be quite panicky whenever Yōko unintentionally makes her heart flutter.


Aya is known for being the fairly timid and easily embarrassed type who comes off as being fairly awkward and unable to express her true feelings. She is shown to be the serious girl of the group and isn't likely to act silly or overly emotional like the others. She tries to do everything with grace and elegance to set good examples; even if they manage to do better than her in certain instances.

Aya is genuinely kind and honest, unless it deals with her crush on Yoko- in which she acts like a typical tsundere. She also is sensitive regarding her body image and feelings. However, this allows her to personally relate with others if they are in the same situation as her.

She is very smart, but has a tendency to become dense or even clueless at times. She is a self-admitted forgetful type. Her tendency to ruin the mood also goes noticed by others, while she remains unaware of what she did. Even Alice thinks of Aya as a smart and reliable girl.


In the manga, Aya is no different than how she is in the anime, although she shows strange behavior. In one case, she accidentally tossed Yōko's notebook into a water bucket, and in another instance she ran into Yōko (who had just seen Alice trip onto the ground) and claimed klutzes are cute. When the notebook came up again she justified it with "Klutzes are cute, right?", causing Yōko to retort with, "No cheating!"

While Aya is level headed most of the time, she can be quite panicky whenever Yōko unintentionally makes her heart flutter. For example, Yōko forgot her lunch when she was in a hurry and asks Aya for some of hers. After agreeing, Aya envisioned a "bakappuru" (lit. stupid couple) feeding one another, causing her to get flustered.


Aya and Yoko are best friends who knew each other since Middle School. At first she was highly dependent on her and it took her a long time to become independent. She is quick to deny ever needing Yoko now though, but has gained a massive crush on her friend and as such, has become slightly distant from her in an attempt to become honest about her feelings and confess them. She is quick to go into denial and panic if she thinks someone else may harbor feelings for Yoko as well.

Aya values the time she and Yoko can spend together, even though she outwardly acts coldly or a little mean towards her. She can appear bossy if she acts stupidly in her eyes, and possesses the traits of a tsundere towards her only. Only with Yoko does her less-than stoic and indecisive side come out. For example, she was going to go swimming until realizing if she was to drown Yoko would have to give her CPR, causing her to back out. She often envisions herself in romantic situations with Yoko, just to hit or scold her for reasons unknown to Yoko after she snaps out of it.

Over the course of the series she appears to lighten up on Yoko, but from time-to-time she would still make insulting comments.