"Big brother!! Who will you marry, Nagomi or Yuzuka?" He returns to his parents' house for the first time in a while and spends seven days with his nieces Nagomi and Yuzuka. On the night he returns, he ends up having sex with Nagomi. The next morning, while he's taking a shower, Yuzuka suddenly appears naked... Seven days of raw sex and intense vaginal ejaculations with his flat-chested nieces! *There are no performers under the age of 18 in this work.