|Age|| 15/16 (start of the series) |
18 (end of the series)
|Occupation|| Student |
|Education||Hounan High School|
|Relatives|| Unnamed Father |
|Relationships||Rei Otohata (boyfriend)|
|Anime||Episode 1: The World's Greatest Gal ♥ Go Go → Ran Kotobuki|
|Manga||Chapter 1: The Greatest Kogal in the World|
Aya is a tall teenager with pale skin and brown eyes. Aya has long black hair that she lets loose most of the time and styles occasionally. She dresses the most simple out of the girls.
Aya was very quiet and shy at the beginning of the series. She was a loner and was constantly looked on by her strict parents. Aya was doing Enjo kō, dating older men for money, many times and almost "did it" but Ran luckily brought some sense to her. Aya seemed to not care about her self in the beginning as she considered it okay to sell her body as long as she didn't sell her soul but after Ran stopped her subsidize dating she gained confidence. Aya was more honest and playful but acts awkward and shy around her crush Rei. Over the course of the series, Aya becomes much stronger and assertive of herself.
Aya started the series as a reclusive loner. Aya focused on her studies but Ran heard a rumor that Aya was possibly doing Enjo kō, or dating for money. Aya admitted it to Ran and then avoided her. Luckily Ran stopped Aya before she slept with her date. Aya then joined Miyu and Ran. She started easing up and even altering her style. However, this distracted her from her grades, which took a nosedive. She then started avoiding Ran and Miyu once more and focused on cram school. After talking to Rei she decided to take charge of her life. Aya then started crushing on Rei. Unfortunately, Rei had a crush on Ran, a crush he kept well hidden. Ran asked him to date Aya and he did, simply out of pity for Aya and to make Ran happy. Aya started following Rei around, which annoyed him and he told her to quit following the crowd. Aya started getting suspicions and they are later confirmed when she learns Rei did it out of a favor for Ran and that he likes her. However, Rei's feelings for Ran are gone and he fell for Aya. The two are then true boyfriend and girlfriend, even heading off to the same college.