猛暑が続く真夏日、夏休みで親戚の家に来ていた我が家。その間叔母であるゆうかさんに宿題を見てもらっていた。ゆうかさんは母の妹で、母よりも賢くて…なにより目を引くような美人だった。そんなゆうかさんは僕を子供扱いしているのかどこか無防備で、緩んだ胸元が勉強中も気になってドキドキが止まらなかった。今日もいつものように二人きりで宿題をしていた時、汗で艶めく胸元に目を奪われていると、急に汗ばむ胸元を僕の体に寄せてきたんだ。そしてゆうかさんは妖艶な笑みを浮かべ襲い掛かってきて…。

It was a scorching hot summer day, and my family was staying at a relative's house for summer vacation. My aunt, Yuuka, was helping me with my homework. Yuuka was my mother's younger sister, smarter than my mother, and above all, a strikingly beautiful woman. Perhaps because she treated me like a *****, she was somewhat defenseless, and I couldn't stop my heart from beating while we were studying, distracted by her loosely fitting neckline. Today, as usual, we were doing our homework alone together when, as I was captivated by her glistening, sweaty chest, she suddenly pressed her sweaty chest against my body. Then, with an alluring smile, Yuuka pounced on me…