Kimio Suga didn’t intend anything untoward, but a cascading series of unlucky events leaves him hiding in a gym locker as his female classmates return from PE class. Luckily he’s found by Nozomi Komine, a shy classmate who covers for Kimio despite his incriminating predicament. But Nozomi isn’t as demure as she seems, because shortly after saving Kimio, she blackmails him into a series of clandestine and compromising scenarios!