Schoolgirl Mai lives each day as the mistress of an older man. To please her uncle, it is Mai's duty to keep her pussy completely smooth and hairless at all times. Under the strong awareness that her body belongs entirely to him, she entwines tongues, draws him close, and devours him hungrily. In this thick, lewd world, she drowns endlessly in sex. Each time their lips meet, Mai transforms further into a more depraved woman. "I can't help it, Uncle... it feels so good..." With every repetition of such words, her feelings grow deeper.