"Futodoki: Something that is unreasonable and outrageous. Also, the state of being so. Futodoki." Kai, a man, is masturbating with binoculars in hand. By chance, he calls out to Ikenaga, a woman in the room opposite. ...Ikenaga is the sexual object he is watching through the binoculars, and whenever he peeks at her masturbating, it gets him hot between the legs. The relationship between the two takes a sudden turn after this unexpected encounter. Will it end up as pure love or...? [Top rankings! Over 70,000 copies sold! The latest work by Ura-Kin Samurai, the fastest live-action adaptation!]