Yumi, a 22-year-old fourth-year law student. At a midsummer beach, she seemed not fully into the excitement, so I approached her and got her to wear a remote-controlled vibrator. When she played watermelon splitting, it worked well and she got quite into it. Eventually it led to sex, and she seemed to enjoy it so much that she bucked her hips and twitched with orgasms. In the end, it was a moment at the beach where I felt glad I had approached her.