After Fuumin breaks his arm saving Risa from a nasty fall-jeopardizing his chances of passing his university entrance exams-Risa can't help but feel responsible. Ever the good boyfriend, Zen takes it upon himself to help his nemesis out until the exams are over. But when Zen realizes Fuumin also has feelings for Risa, their rivalry intensifies more than ever! Meanwhile, Risa is trying to stay focused on her own studies, but she can't resist the urge to spend more intimate time with Zen…