[APNS-233] My sister was made a fellow pizuri guy.... It's my first love.

The elder brother ryuta was a man like the half-ref, and had built a sexual relation with younger sister and the female student's Enn. I knew it was a thing that I couldn't do, but I couldn't refuse ryuta, which is kind to me, and I haven't inserted it for years, but I've been having oral sex. One day, a friend of Ryuta's school days, Kameda, comes to visit. Kameda tried to put his attention to Ennn's big, threaten his relationship with Ryuta as a story, and assemble the enn.