Mitsuki Sohara

Sohara is Tomoki's next door neighbor and childhood best friend. She gets annoyed whenever Tomoki acts in a lecherous manner and typically punishes him with a single karate chop. As a child, she was constantly ill and only had Tomoki as a friend. Despite all the punishment she dishes out to him, she secretly loves him, and has embarrassing lustful dreams about him. She is good at sports, but struggles heavily with English and is a deadly cook when it comes to sunny-side up eggs.

Spoiler

Eventually, Daedalus reveals that she created Sohara: the girl who died from a childhood illness was Daedalus's original avatar, and the girl who grew up with Tomoki was a clone she made so that he would not forget her.