After surviving an attack by a vampire and becoming a vampire himself, Araragi Koyomi helped five girls solve their supernatural problems—yet now their problems have literally started knocking at the door of his house. Waking up, Koyomi finds himself kidnapped and handcuffed. But can handcuffs restrain an older brother when his sister needs help? “What trouble have these two idiots gotten into again? And who is this Kaiki?” (c)