和花と付き合って4年経つ彼氏がどうやら浮気をしている…。和花が大好きな後輩の純恋はそれが許せなくて、和花の彼氏を問いただすが上手く躱されてしまう。だったらと証拠を掴もうと張り込んでいると、和花の彼氏と浮気相手がラブホテルに入っていくところを目撃！隣の部屋から様子を伺おうとするが、部屋にある電マやバイブが気になってしまい…。その内に何となく2人は無自覚のまま体を触っていき…。
It seems that Waka's boyfriend of four years is cheating on her… Junko, Waka's junior who has a crush on her, can't stand it and confronts Waka's boyfriend, but he cleverly evades her questions. Determined to gather evidence, Junko stakes out the place and witnesses Waka's boyfriend and his mistress entering a love hotel! She tries to peek in from the next room, but is distracted by the vibrator and other sex toys in the room… Before long, the two of them unconsciously begin touching each other…

– JavGG.net