At this point I'm probably just going to slap something together since I've kept you long enough, muse or no. I hope to have something up by the day's end. Sorry just doesn't cut it now, but sorry anyway.
I think the best way to handle hte situation is just to have the scenario go as follow
Anselme puts in stone making the total 4, but still with the indent in the center ->
He leaves to find last stone ->
Anise & co arrive ->
Anselme returns to see them just arriving/messing with the wall, does his thing and steps off to the side to watch the event start/Alternatively he could just walk off and return when it's all over/or just return when it's all over, whatever you prefer, we could make edits based off the most reasonable scenario ->
Anise dips, Anselme is left to talk to Ben/Yukari/Figure out Anise took his stone from the wall
Well, since there are six stones and Anselme only held the 5th, you probably wouldn't need to cut out the bit about Barry. You do have a point about the other part, though. In that case, should I edit it so that Anselme never puts his stone in? I could also edit it so that he trips or something before reaching the group so that you don't have to worry about editing in a reaction to him.