I'm staying at my brother's house because of work.My brother and I have different lifestyle rhythms, so we don't see each other much, but my sister-in-law Chinatsu-san treats me very well, so I was excited every day.That's no wonder, since I was delusional that I would be such a wonderful wife ever since my older brother introduced me to Chinatsu-san.One day when my work schedule changed and I came home, Mr. Chinatsu was masturbating alone while watching erotic videos.She tried to leave quietly, but she was noticed by Chinatsu-san.When I escaped to her room, Mr. Chinatsu came.I nodded when asked if she had seen it.I shake her head when I say that I despise her.And I was so nervous that I confessed that I liked Mr. Chinatsu.Then Chinatsu-san, will you keep what you saw a while ago a secret?she asked.I nodded, of course, but instead of keeping it a secret, she quietly closed her eyes and brought her lips closer to mine...