I'm Koji Onoe. Two couples are getting along well with Wakaba, who got married three years ago. My sister and her husband, who moved to the neighborhood six months ago, often come to our house. My unbridled sister has been having sex with her brother-in-law at home the other day, and I knew at that time that my brother-in-law was quite a big dick ... Well, anyway, I thought that my husband and wife and family would have a good life ... but the other day, I saw my wife and sister's husband hugging each other.
