Hey guys I was watching a clip of a yaoi anime but I don't know the name. I'm pretty sure ...

Hey guys I was watching a clip of a yaoi anime but I don't know the name. I'm pretty sure it's a manga and I've seen it around before but I don't know the name and now I'm kinda interested in reading it.

It looks like it's military themed. I think the uke said the seme's name was Klaus and he had blonde hair. The clip was where the seme was forcing the uke to have sex while outside a boy was trying to talk to him. The uke didn't want the boy to hear them, so he bit his arm, but the seme got really mad and just ended up forcing him even more.

Thanks for your help!