This is nicer already. To not have Rey try to run away from him. It might also help with keeping her safe in the long run, especially if it leads to him finding out if the guy living with her is Gregory or not. Until then... in dubio contra reo. He won't trust that guy, not if he might pose a danger to a member of his family, no matter if said member remembers him or not.

"I am Muscovy Maglorion Prochainezo, and people from the future have told me that one day I will be very big and strong and have a lot of friends but I'll use part of big sis's name." That ones is still a bit weird to him.

....how isn't sure how to proceed behind that. What does "who are you" mean, past name and title?