Aww... I feel for you. All the researching can kill plot bunnies. I almost wanted to write one as well but I couldn't kill them.

Yes, indeed. I just think he won't regret it because he was the one who made the decision. But of course Fuji will totally see that Tezuka still wants that part of him back and then he will offer himself to Tezuka in a hot hurt/comfort sex session heal Tezuka with all his love. LOL.