Tane Onigase

A strong (her fists can produce shockwaves) but sweet, kind girl who lives in Chouji's shoe closet. Because of her hair color and abnormal strength she's mistaken for a delinquent by all students except Chouji and other 3 main heroines. Her infamy of being a badass delinquent landed her a couple of (almost) nameless followers like Delinquent A and Delinquent B. Nevertheless, Tane is dedicated only to Chouji, who seems to be the only person out there who's able to recognize her in any costume she wears.