コンビニバイトをしている僕。ある日、仕事を終えて帰ろうとすると豪雨で帰れない…するとシフトが被っていた明るくて低身長の妹みたいな後輩、夕莉ちゃんが家に泊めてくれることに。ズブ濡れで帰宅後、僕の後ろで着替える夕莉ちゃん…その際にチラっと見えてしまった着衣からは想像のつかない巨乳…しかも夕莉ちゃんが腕におっぱいをくっつけて誘惑してきて…。
I work part-time at a convenience store. One day, when he was about to go home after work, he was unable to go home due to heavy rain… Then Yuuri, a bright and short junior who was working on his shift and was like a younger sister, decided to let him stay at her house. After coming home dripping wet, Yuuri changed clothes behind me… At that time, I caught a glimpse of her big breasts that I couldn’t imagine from her clothes… Moreover, Yuuri seduced me by attaching her breasts to her arm. I’ve been…