What do you mean? I'm eagerly reading every page to find out if she ends up a willing slave or if she successfully rejects him and remains with her love and/or family!
Note that I don't think I've read a single chapter of it and I'm still willing to bet almost anything that it's a "wife/mother is being forced to sleep with a guy while her husband/family remain oblivious" story and it'll end like pretty much EVERY single one of his works do. Seriously, I'd actually be more surprised if Sanbun ever changed.