I hate cruelty, and I hate to see my favorite characters portrayed this way. Pain is not necessary. It's not sexy, and it suppresses sexual pleasure. This is a horrible way to show a person losing their virginity. I think that probably, if the authors who produce this kind of dj had ever actually experienced what they depict, they would be cured of depicting it.
Shingeki no Kyoujin dj - Kono Buta Yaro ga.