Катаґірі Аяко

A girl characterized by her chignon hairstyle. She often mixes English into her speech.

While her club affiliation varies across different versions of the story, in media adaptations requiring a fixed choice (such as the CD/radio drama, novel, drama series, and OVA), she is consistently depicted as a member of the Art Club. Her favorite painter is Gauguin.

She is an excellent singer; going on a karaoke date with her triggers an event where she performs a song.

She has a very straightforward, no-nonsense personality; she is a free spirit who is somewhat casual and easygoing. Often described as a classic "Type B" personality, she doesn't sweat the small stuff. She is an admitted eccentric who is always cheerful and wears a constant smile. Whether as a friend or a lover, she is the kind of person who is genuinely fun to be around.

While her playful side was highlighted in the drama series where she starred, her first interaction with the protagonist—who is struggling at the time (working as an amateur band's composer and guitarist)—involves her delivering an unflinchingly honest assessment of his work.