OyoJan
Hit Me!
Interesting. I think I’ll have Akuma interact with Sephiroth for the time being since it would be very interesting to see how things would play out.If you want to interact with another Street Fighter character, Juri Han is battling Dark Pit and Pikachu in the forest near the Lake Shore of the Subspace Emissary map. However, there are a lot of characters already in the general area and I do plan on getting some plot going on to get things on track.
Shulk and Min Min have just met each other at the Mountain Falls (WoL map). They're the smallest group and may be the easiest to integrate yourself into.
Another small group is Byleth, Sora, Professor Layton, Pichu, Chrom, and Robin at the Battlefield Fortress (SE map) with Chrom's army. They're just meeting up, so it'd also be an easy group to integrate into.
Sephiroth is alone with Jenova's head. He just left an abandoned shack. If you want some villain interactions, he may be a good place to start.
Roxas and Isabelle just escaped the Military Base (WoL) and they're planning their next move. The post speed on this group is a little slow, however. If you want more fast-paced posting, I recommend one of the other groups I've mentioned.