Looking For Yaoi Manga

Cant remember name or this yaoi. From what I can remember, there was a really tall silver haired freshman who rarely spoke to anyone. He got showed to his dorm by a cute gay with glasses. The cute gay one kept misunderstanding the quiet guys actions and easily got mad at him. But the freshman almost stopped going to school, he eventually started opening up to the gay guy.
Another note, the tall shy guy plays piano.

Hey, what's that 4p (foursome) yaoi with the tsundere uke that was getting stuffed with dicks. I think that plot was 2 chps long. Also, he didn't jerk off for a week so he could cum really good, but it backfired as it just made him horny enough to kinda contribute to the gangbang type thing. :)
(づ￣ ³￣)づ what's the name?

Guys, i need help, can someone suggest me which manga to read? i want something like geu kkeute issneun geos, without sex, hahaha just looooooveee, and btw, i'm begginer in manga reading..(〜￣△￣)〜