Ashuri's Favorite

I remember reading manga of this about the guy working at the bar and ito like stopping by to see him and I think he gradually gets his memory back but the thing is I think it ended sadly or happy I think he disappeared while they had sex once more and then another a couple years later he comes back and they get together. I just know that there is a sequel to this of what happens next. I just forgot the name but I could be way wrong