Akito's childhood friend. Despite having a boyish name and talking mood, Ginbee is a girl and secretly has feeling toward Akito. Due to family issue, she was taught as a boy and cannot work herself, living only on her family's financial support. She later transferred into Saint Liliana High School and became the accountant of the student council. Despite the fact she even dared to move and transfer schools to follow Akito, Akito often refers to her as his best (normal) friend unintentionally, which disappoints her greatly.

She has a habit of mumbling about Akito's unawareness whenever Akito overlooks her feeling.