Tatsuya has been sent to his wife after a big quarrel between a couple. I try to make up, but it doesn't work. At that time, my sister-in-law, Kana, was worried and offered to arbitrate the fight. Tatsuya, who has no choice but to thank the rescue boat, raises Kana home to get a consultation, but ... Kana who is unprotected and closes the distance cannot hide her upset. Kana tells me to take a bath together to escape ...