With a group of friends, 16 year old Kizuna stalks the city at night, flirting with middle-aged men and coercing them out of their money. The thrill should be enough to satiate her, but Kizuna remains unsatisfied with her everyday life… until a beautiful woman named Inoue Yuki, a fellow resident of “Birdcage Manor” approaches her with a job proposition- to model in the nude for her cousin, a painter and fellow resident named Yuusei Asai!