Mizutani is a self-absorbed overachiever, concerned only with maintaining the highest grades in school. Haru is an impulsive short tempered brute, who scares everyone with his explosive bursts of violence. Haru gets suspended on the first day of school when he encounters some bullies harassing a student and dispatches the bullies with great bloody violence. Mizutani is tasked with delivering school materials to Haru who interprets this as an act of friendship and latches on to Mizutani, much to her dismay. And so begins a strange and potentially combustible relationship!
Shizuku is now more determined than ever to make Haru aware of her love for him, but Haru is too preoccupied with fending off Yamaken to notice! Shizuku thinks Haru has nothing to worry about, but competitive above all, Yamaken has some plans of his own. Meanwhile, blossoming feelings turn the popular but romancehating Natsume into a maiden in love?!