I need help finding a manga

I read this a while ago when it only had a few chapters but I know it must have more now, but I forgot to bookmark it! It's an omegaverse and the first few pages explain the world and his omegas are treated and social status. The omega went to work in this large house. I think it was the house of some rich guy but I wasn't sure. He ended up falling in love with someone who is not from that house though. Other than that the only thing I remember is a scene where the omega has a sack slung over his shoulder as he approaches the house. I think they usually dress in traditional clothing too.