とあるコンビニにパート勤務する私。息子の学費のために働き出してから今ではすっかり勤務歴の長い店舗の中心メンバーになり、店を任されることもしばしば。家にいるよりも外で働く方が楽しいのですが、年を重ねる毎に性欲が増して日中でもムラムラするのが悩み…。なので、誰も来ない時間帯や休憩中にこっそり身体を慰めていました。そんなある日、息子の同級生・ハルトくんが買い物にやってきたのですがいつもと様子が違うのです。不思議に思っているとレジ前に来た彼はなんとコンドームを5個一気に買っていって！？更にそれを一日で使い切る絶倫くんだと判明して…。

I work part-time at a convenience store. I started working there to pay for my son's tuition, and now I've become a core member of the store, often being entrusted with managing the store. I enjoy working outside more than staying at home, but as I get older, my libido increases, and I get horny even during the day, which is a problem… So, I would secretly satisfy myself during times when no one was around or during breaks. Then one day, my son's classmate, Haruto, came in to shop, but he seemed different than usual. I was puzzled, and when he came to the register, he bought five condoms at once!? And then I found out he was an incredibly virile guy who could use them all in one day…