Arima Shouko

She is a classmate of Setsuna and she and her two friends Satou and Mirozawa regularly pick on Setsuna. However this only covers up the fact that she has a crush on him one that she has a hard time even admitting to herself. but will regularly revert to her angry persona when things dont go her way. She lives alone in an apartment which she bought with her pocket money revealing that she is quite wealthy because she cant stand her parents.