Tachibana-san She seems to be a tough and cool girl, but she actually just have communication problems She is deeply in love with her childhood friend. Whenever she creates password, it's his birthday. Whenever she has a chance, she tries to sit on the chair he used to sit on. Her hobby is to keep a diary in which she only writes about him Even though she's not in a relationship with him, she's saving money for marriage by doing a side job She takes his fingerprints, makes an enlarged copy of it, frames it, and hangs it in her room

Childhood friend He seems like he understands everything, but he doesn't understand her at all He has a faint crush on Tachibana-san