I work part-time at a certain convenience store. Since I started working to pay for my son's tuition, I've become a long-term core member of the store and am often left in charge. I enjoy working outside more than staying at home, but my problem is that as I get older, my sex drive increases, and I get horny even during the day... So, I've been secretly pleasuring myself during breaks or when no customers are around. Then one day, my son's classmate, Haruto-kun, came in to shop, but he seemed different than usual. While I was wondering why, he came to the register and bought five condoms all at once!? I soon found out he's a stamina beast who uses them all up in a single day...
