Well, I guess he's actually really lucky he ended up with her specifically instead of another girl.
Because Hentai would make it so that it's a more interesting situation to satisfy...I liked it.
I was honestly expecting that it would be his fiancee working there, or something to that extent, but I guess not.
I thought the same, the fiancee working there for only one day to get some expierence so that he won't get disappointed with her on their wedding night and he gets to be her first client