|Anime Debut||Season 1, Extra Episode: Live House!|
Although Aya might appear "scary" at first sight, she is actually a kind person, complimenting Yui Hirasawa's performance during the band's concert at their school despite Yui's embarrassing blunder at first. Yui, being complimented for the first time by a stranger got a blissful feeling thanks to Aya which greatly confused her. Later, after HTT's embarrassing accident during the rehearsal, Aya told them to ignore it and just try it again until they get it right.
Aya is a big fan of Mio Akiyama, as she also plays bass with much skill. She also shows a great amount of love towards her own band and its members as she expressed her wish to play music with them forever.
Aya has shoulder-length brown, fluffy hair and brown eyes. She usually wears her band's trademark, an orange pullover with an image of a splitted apple on it. She also wears a dull-green skirt, grey tights and red shoes. In London, she is seen wearing a dark-green jacket, a light blue scarf and green shoes.