Ok, so here comes the story:
It's about a boy who is supposed to take care of the dorm. He lives there too and is asked to take care of the "problem class". In that class there is one guy who was in the army and protects the Teacher. Then there is a guy who has Yakuza(?) Parents. And yeah...uhm And the Main guy has a chicken. And the Yakuza-guy and the main guy fall in love...and...yeah. I know that isn't many infos but does anyone know how its called tough? 😕 It is a yaoi, comedy and romance manga...

Thanks for answers.
Ookami 🙂

If it helps i remember antother scene from it:
The Student Office (President) hangs photos up on a black board, where everyone can see overworked Photos of the Main Chara (He has a light hair-color btw.) and the Yakuza-boy (Black hair) having sex. It's not true, they never had sex so they make a plan on how to show who did it. They are in the Bathub (Wich is big btw.) and they are chatting the yakuza-guy has a tatoo of a dragon on his back...and the main guy/uke finds it really cool, wich surprises the Yakuza-guy/seme cause everone else "piss in their pants" when they see it. The seme gets a hard-on over seeing the uke naked...and then a guy with a camera appears and the seme follows him (still with a hard on and completly naked...)

Sorry for my bad english btw...i'm german...
And i hope that helps more? 😐

Unfortunately I really don't know which manga is this, but it sounds like pure gold. haha I really want to know so I can as well read it.

I found it! YaaaY! Basaii! Ok... So @dalek: It's called "Ossu! Renai Gakuen"
This can be closed, i think...