406FSDSS-769 "If it's just tit-fucking, it doesn't count as cheating, right?" During the no-masturbation period, I was tormented by my girlfriend's sister with the best titty-fuck ever. Seven days of endless orgasm management while holding back.

I was suspected of cheating, and my girlfriend made me wear a chastity belt while we were living together. One day, her sister Rin came to live with us for a week because she couldn't sleep due to construction noise… I accidentally saw Rin after she took a bath, and I instantly got an erection! My chastity belt was found out by my sister Rin. She started messing with it for fun… and that's how the one-week paizuri orgasm management by my little devil sister Rin began! "Sister, lend me your tits. I can't hold back anymore!"