Biko Daitokuji

B-ko is a rich, affluent young woman who is a serious megalomaniac. She has a one-sided rivalry with A-ko who mostly ignores her and wonders why she even tries to fight her. B-ko is unrelentingly jealous of A-ko's ability to be likeable and carefree, and also of her deep friendship with C-ko. B-ko immediately becomes interested in C-ko when she and A-ko transfer to their new school. Her interest turns into obsession, though she chalks up her newfound crush on C-ko as simply wanting to be her best friend instead. Th…