Wrio and furina can be sooooo fun!I think a lot of stuff could be fun with them. Have you read anything on him? I don't want to give you spoilers just incase you havent yet.

Also all of that sounds awesome with itto. I love playing him the silly fool but I also love writing him more serious if the situation calls for it and I think with that kinda premise he would have to be a bit more serious.