In a tragic love triangle, Monami gives Mizushima a Valentine’s Day chocolate filled with her own blood, changing him into an immortal. The third side of the triangle is Keiko who wants Mizushima all to herself. A fight ensues, but when Keiko accidentally falls to her death from the roof, her mad scientist Kubuki father brings her back to life with the aid of a few of her fellow students’ body parts allowing her to take on Monami in a battle to the death.