Forgot the title.

Yaoi manga where the setting is modern but the Uke is from a well to do family who lives in a traditionl house like sliding doors and uke always wears a yukata at home. Then 1 day his tutor from when he was younger came back (not sure if seme is a cousin). Uke has been crushing on the seme but was disappointed when he left. So he has been sleeping around with his classmate who hangs out in his room. There was a scene too where the SEME gave the uke a hickey saying it was to serve s a BUG REPELLENT. Then 1 day the seme saw the scene where uke and classmate was just starting to get it on when he grabbed the classmate's collar and kicked him out. And then i think they mad love afterwards. This is just a oneshot.