MIDA-711 — My drunken, big-assed sister-in-law goes on an indoor exhibitionist rampage in a tiny bikini! I succumb to the temptation of her big, digging-in ass and get fucked drenched in sweat, fucking her crazy ass and cumming inside her 20 times.

One scorching summer day, Yuzuru visits his brother's house. The air conditioning breaks down, and his brother's wife, Unpai, unable to bear the heat, strips down to a micro-bikini. Unable to resist her advances as the heat makes him drink more and more, and his sister-in-law approaches him in her tiny bikini, he... This is the story of how he and his sister-in-law, in a lewd swimsuit and with a slutty big ass, had a sweaty, passionate encounter...