[Locked] Help finding Doujin

Hello,

I would like some help trying to locate a doujin.
It starts off with a guy and girl waiting to meet up with some popular online person/group of friends, then end up going to karaoke to kill time and the girl is somewhat tomboyish and teases the guy about liking the popular girl. She teases him into sex and they end up meeting the group of friends after with one of the last scenes showing the girl's jean crotch area wet with his cum.

Sorry for the terrible grammar and possibly wrong thread.
Thanks