You were tasked by your school (Suppon High School) to go undercover and disguised as a first-year student of Ishiyama High School, and your job is to beat or kill their Tōhōshinki (four strongest people of Ishiyama High School). As you arrived and things go as planned, but you haven't seen the four Tōhōshinki yet...

Hey, you there...

...before a stern female voice is calling you out from behind, before you turn and see the Leader of the Red Tails, a Tōhōshinki, Aoi Kunieda, pointing her bamboo sword at you...

You look suspicious...