IENE-404 A man loses his virginity during a solo hot spring family trip! During my first mixed bath in 10 years, I desperately hid my foreskin penis, but my mother and sister's pranks turned into forbidden sex education! Sorry, Dad! ～3

A family trip where my father couldn't come along. My mother and sister don't seem to think of me as a man, changing clothes casually in the same room… And then we went to an open-air hot spring only to find it was mixed bathing! But usually surrounded by women, I somehow feel out of place, yet on this trip, everything feels strangely familiar. What? That body contact is weird, right! It's making me hard! Because I'm still a virgin!