I'm so for both Asriel and Anthy! Asriel can meet Little Waltr again and maybe it'll drop that he's the same Mr. Walter he's friends with, albeit this is him as a child. Depending on what's said he might accidentally give away some details of his childhood; i.e. he panics and mentions being 'locked up in the little cell' for not going back to the orphanage. That sort of thing.

For Anthy, I'm completely game for her messing with Ash a little in a playful sense. He'll actually be delighted that she has magic too, and will show off some of his powers. He doesn't see witches as inherently bad, given he was raised by a fae being, so that oculd be interesting too? Given how she was previously ruled over by stereotypes/roles?