Darn that Mr. H, always vanishing right when you require his services. Can't say "damn him", since that word carries a bit more weight among the guests of this particular tea party.

Cute. I do wonder how Joshua would've ended up meeting Zamasu…

Here's an idea - TWEWY & Okami. Either Ammy or Chibi would manifest via the Dog Statue. (I would prefer this to alter the Reaper Game, but it doesn't have to... though Chibi wouldn't be as good a fit if you did that route)
Or perhaps, you do something connecting to Dream Drop Distance - after the Players 'wake up'.