Etou-kun harbors a feelings towards the honor student, Sayako. But, things take a crazy turn when shit hits the fan one night. Etou sees Sayako getting into a heated argument with some dudes, and at first, he’s thinking of playing it cool, just walk on by and pretend he didn’t see anything. But something inside him snaps. So, without a second thought, they grab each other’s hands and make a run for it, like a couple. But wait, there’s more. Turns out, Sayako’s got a whole other side to her. Yeah, she’s still Sayako, but she’s got this alter ego, this “rebellious night girl” personality. It’s like she created this bad girl version so she could keep up appearances during the day. But when the sun sets, she lets loose like a bad girl. She’s rebellious, foul-mouthed, and sexually uninhibited. Etou’s getting a front-row seat to all sides of her, both the good girl and the wild one.