Aiko Tanaka
Another class representative alongside Hana, and Koyori's best friend—though Koyori would probably complain about how annoyingly reliable she is. Aiko's the type who's genuinely kind to everyone, which only makes it more frustrating for Koyori that people keep treating her like the dependable one. She's basically the responsible friend in that dynamic, which fans often note creates a funny contrast with Koyori's more chaotic energy.
Content compiled by AnimeList.moe from publicly available sources.