Seira Shirakawa
白河聖良
Gender: Female
Blood type: A
Seira is Sou's longtime childhood friend and neighbor. She is also his classmate, and the class representative. Seira has a strict and upright personality, especially when it comes to dealing with Sou and his perverted tendencies. She comes from a family of devout Christians, to Kogure's surprise and chagrin.
