ある日突然、一人暮らしの我が家に義妹の夏月が。母と喧嘩して家出。勝手にうちへ避難することにしたらしい…。俺に何の相談もなく…。その日から薄着のだらしない格好でゴロゴロと過ごす夏月。ムチムチとした太もも、着衣越しにも存在感たっぷりのおっぱい。入り浸りっぱなしな生意気な義妹。家賃も生活費も払わない態度に説教をしたら「身体で払えばいいってこと？」とおっぱいを差し出してきて…。理性吹き飛ばす爆乳に乳揉みだけじゃ収まらず毎日パイズリ三昧！家賃をおっぱいで回収！しかしある日夏月の態度が変わってきて…
One day, my stepsister Natsutsuki suddenly showed up at my house where I live alone. She had a fight with my mother and ran away. It seems she decided to take refuge in my house on her own… without consulting me at all… From that day on, Natsutsuki spent her time lounging around in sloppy, light clothing. Her thighs were plump, and her breasts were clearly visible even through her clothes. She was a cheeky stepsister who was always hanging out. When I scolded her for not paying the rent or living expenses, she offered me her breasts and asked, “So you’re saying I should pay with my body?” Her huge breasts blew away my reason, and I couldn’t be satisfied with just fondling them, so I gave her a titjob every day! I paid the rent with my breasts! But one day, Natsutsuki’s attitude changed…

– JavGG.net