I'll Make a Habit of It S01 E01 Born! Fighting Idol?!

Having grown tired of being an Idol, and wanting to get back to using her martial arts skills, Shiratori Nagisa puts on a gakuran and cuts her hair short, and enrolls in the local school with the name "Ootori Nagisa". There, she quickly meets her new crush, Nosaka Akira - The leader of the enemy school's delinquents.