Kyosuke decided to stay at his brother's couple's house for two nights due to work. Kyosuke is at a loss as to where to focus his eyes on his sister-in-law's beauty and obscene appearance. On the first day, Kyosuke wakes up in the middle of the night and peeks at his brother and his wife's perverted sex. On the second day, her sister-in-law, who tells her that her husband won't be home tonight, invites her to train me.
