性の知識のない少女・ララを保護したらお礼に手コキしてきた！そんなことは望んでいなかった真面目な男は理性と快感の狭間での葛藤虚しく結局射精！しかも止め時がわからないララの手コキに耐え切れず男潮噴射！「おしっこをかけられた！」と勘違いした少女はそこから放尿で倍返し！それから何日経っても居座っているララにお礼と称して放尿を浴びせられる日々が始まる…！
This guy lives with his girlfriend in Tokyo. One day of summer, her younger sister Hikari comes to stay over and she messes everything up like a tornado. This schoolgirl despite looking innocent, she is extremely lewd and has stamina for years.
"Everyone is in the morning! Get ready early!" A family full of men, I'm the only one to replace my mother who isn't there now. Every morning, it is a daily routine to process the sexual desire of 10 brothers in the morning! Big cocks of sexually active brothers pierce one after another ... I will wake up with continuous sex without any time to rest and I will be refreshed! If I had such a cute little sister, I would pull it out every day!
