"This is also for the sake of art... but even knowing that, it's embarrassing." In the art club Nano belongs to, there was a tradition of taking turns acting as nude sketch models. Nano steeled herself and stood on the model's platform, but the club members set a trap and drugged her with an aphrodisiac. In a haze of consciousness, Nano was struck by an unprecedentedly intense pleasure and became completely immersed in it, forgetting all about art.