I'll Make a Habit of it - Season 1 Episode 2 Duel! Thunder of Love
Overview: Nagisa revisits a memory where she becomes an Idol to save her father's Dojo. // Nagisa is asked by Tsunoda and co. to help battle the rival gang at Shirayuki Middle. She comes because she hears Nosaka will be there, not knowing that Nosaka's one of the people she's meant to fight.