Akashi

Akashi has a very icy personality and is hard to approach. She appears to be slightly less harsh to the main character.

A freshman student who is commonly (but not always) the center of the protagonist's affections. She acts rationally and even coldly towards most people, but often shows hints of affection (or helpfulness) to the protagonist. Her fear of moths also contrasts with her normally calm demeanor.
She often appears in the same club that the protagonist joins, she is a student of the engineering department and a member of Birdman circle.