My Wife’s Sister Is Too Sexy… Okuda Saki

Synopsis

After five years of marriage, their intimate life has grown stale and sexless. Jun, an honest and earnest man, has been rejected by his wife and lacks the courage to visit adult establishments, spending his days in frustration.

One day, his wife leaves for her friend’s wedding for three days. During her absence, Saki, her older sister, visits with home-cooked meals out of concern for housework. “You’re so young but already sexless? Well, we are too…”

The frustrated sister-in-law, brimming with desire, seduces the young Jun. While his wife is away, the two indulge their bodies together. “Since it’s through marriage connection, it’s not cheating, right?” Overwhelmed by her mature body and intense pleasure unlike anything his wife offers, Jun reaches climax again and again.