"Using someone's hand doesn't count as cheating, right?" I, Hui Xing Qi Luo (MIDA-422), was brought to orgasm by my girlfriend's younger sister's devilish hand while staying in a hotel for three consecutive nights. After ejaculating 20 times, I was then taken to bed by her.

Just when I was getting fed up with her not letting me touch her despite us being in a relationship, I thought we could finally make love at our accommodation during our trip. But then her sister showed up too! And what's more, this seemingly docile girlfriend's sister actually tried to seduce me by rubbing herself against me, and I stupidly fell for it…