12 amateurs who became open at a beach house. I wonder if I got excited by the curious gaze in a disgusting swimsuit, I masturbate in the toilet, the shower room, and the changing room! Maybe it's because of the openness of the "sea", which is different from usual, but the overly sensitive Ma-ko twitches and cramps just by touching it! Secretly take a peek at the masturbation of such 12 amateurs! After all, the sea is nice, isn't it?