Yuri Shiraishi returns to the family home with her husband, wearing careless outfits that flaunt her pale, curvy body and tempt his adult brother. When he finally grabs her, she reminds him that she is married to his brother, yet gently gets him off with her mouth and huge breasts. He pulls aside her panties and eagerly licks her smooth pussy until she trembles, then lets her lower herself onto just the tip. Unable to hold back, he grabs her hips and drives all the way in. Yuri climaxes almost instantly, grows wildly aroused by the taboo sex, rides him with her ass bouncing, and begs her brother-in-law to fill her pussy with cum.