Yabai Yatsu ni Sukareta Hanashi

Kanasuke, a virgin college student who is traumatized by girls, spends his days stalking (or in his opinion, chasing) Shibuya, a handsome and flirtatious prince who he has admired since his high school days. One day, Kanasuke sneaks into an orgy just to see his senpai, but Eiji, a handsome guy from a different lineage from his senpai, finds out about his stalking and plays a naughty trick on him??