Searching for this yaoi

It’s a weird manga yaoi. Basically the MC (uke) searches for work that pays good. He finds a suspiciously high paying job. But he does it anyways. Mind you, he has a boyfriend apparently.

I faintly remember the title being something like hamadera or yamadera or something, I don’t know at all.

MC goes to the old man’s home and they do the deed after the man coerced him. It’s a very porn-like story, nothing serious. MC seems to enjoy it, but also disgusted by what he did and doesn’t want his bf to find out. He needed the money.

Then they do it again. Later, the old man has his bf come and see, and MC’s classmates join in and fuck MC. The Bf is upset but also fucks MC, and watched other fuck MC.