I'll Make a Habit of It S01 E04 You Might As Well Give Up! The Revenge!

At Nagisa's school, Seiun Academy, she meets a girl, Yukari, whose father lost her family's dojo to a rogue student. Nagisa offers to help train Yukari to be able to win the dojo back, but Yukari takes a liking to Nagisa in this time.