I think this type of stuff is the most fun to headcanon. Thinking on what an immediate future for a character is very different than awhile ahead, so I’ve really liked the ideas presented here. The only thing I’d say isn’t too well supported is that Marisa strays far away from magic that would turn her to a youkai, as she feels it’s unnecessary and she doesn’t need it. It’s essentially her big piece of pride in her work with magic. Some of my thoughts for characters going forward in the future has mostly been of Keiki. Keiki is an interesting case as she’s stated to have left the animal realm to live on the surface. She wasn’t welcome in the animal realm largely because her nature of making humans to idols upset the realms balance and caused incidents, so she moved to stop that. The interesting part is that this would cause her to lose her intial source of faith, only really having mayumi left as a consistent source. My headcanon is that this causes Keiki to lose godhood and become a normal youkai, Hina style. She would basically be doomed to wander the surface, not really fitting anywhere and having a hard time to adjust. I don’t exactly know what she would do from there, but my feeling is that she might either seek revenge on who she thinks got her there, or try to seek shelter with one of the religion groups. So yeah, many characters are fun to think about where they would end up as results of incidents and time in my opinion! Sorry for rambling about something slightly unrelated though.