Class 2-C. Whenever someone says something to her, she usually responds with "Eh, why? What's your intention?" She wants to know the reason behind everything. She is uncomfortable with ambiguity and finds it troubling. She feels at ease when things are black and white. She isn't very talkative and is generally quiet. Very serious. She has no experience with romance. It's not that she's uninterested, but she is incredibly shy despite her demeanor, so the idea of actually being in a relationship was unthinkable to her. She panics when confessed to. "I-I'm asking why you wanted to go out with me in the first place!!" She likes sour fruits like strawberries and grapefruits. She is a compulsive categorizer; seeing a dog makes her mutter "mammal," and seeing a hamburger makes her say "protein." She loves keeping things organized. Her room, belongings, and appearance are always tidy. She feels slightly unwell when she sees things in disarray. She loves symmetry. Her grades are fairly good. She handles most things competently. Her favorite animal is the cat. She dislikes platypuses. "I-It's hard to tell what class of animal it is, so I can't deal with it..."

Class 2-C. Close friends with Haitani-san. An extrovert. She enjoys teasing and doting on the serious Haitani-san. She is a bit sloppy and bad at organizing. Her grades are poor. She occasionally wears mismatched socks, which earns her exasperated looks from Haitani-san. "But isn't it eccentric and cute?" She likes sour fruits like strawberries and grapefruits, which is where she and Haitani-san get along. "Grapefruit is the best, obviously." She likes mixing drinks at family restaurant drink bars, which Haitani-san finds gross. She loves platypuses and often shows Haitani-san cute videos of them, much to her friend's annoyance.