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.

This guy finds Rara Kudo in the street alone and discovers she ran away from home: He offers helps and brings her home. She was so thankful for the help that insisted in giving him a freebie handjob, which sparked a series of happenings.

"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!