I was a cuckold and got rubbed down by her sister's little devil handjob at an inn where we stayed for three nights in a row. I was cuckolded by her sister's devilish hand-job and ejaculated 13 times.

The unexpected presence of Mio, the younger sister of the girl invited to the hot spring trip, brought about a surprising turn of events. Despite her innocent appearance, it turned out that the younger sister was actually a nymphomaniac. Giving in to her sister's seductive temptation, the protagonist succumbed to self-pleasure, accompanied by a sense of guilt. Unable to resist her cute face, lascivious whispers, and techniques, they were completely captivated. The younger sister's presence completely transformed the trip, making it an unforgettable experience.