I think we can safely rule out the likes of Rumia, Yuuka, and the Watas. I mean come on now.
Not really, while their odds are fairly low, I wouldn't rule them out. Rumia's odds are very low, because she is a stage 1 boss and thought to be weak. Most of the fighting game characters are around stage 3 and up.
Watatsuki sisters, since they are in a manga, it would make sense for them to not appear anywhere on the background.
That said, almost all of the Phantasmagoria of Flower Viewing cast has been shown except Aya and Yuuka. Both of these characters fall under the conditions of possible fighting game characters. They might appear in other stages, since not all stages have been shown.
Great point. I wondered how that was possible, especially since Sanae is required to fight Suwako.
Gods can split themselves infinitely. Suwako can both help Sanae and fight her.
@next character: Sanae is a given. Kanako or Suwako would be playable, not quite sure which one. If Symposium of Post Mysticism is to go by, then it will be Kanako. But in either case, I expect only 2 of the 3 Moriyas to be playable and Sanae already takes one of the spots. Pretty much, if Kanako is playable, Suwako is not. If Suwako is playable, Kanako is not.
But will that be all? There should be 1 new character, which is the final boss and possibly a second new character, like what happened in Scarlet Weather Rhapsody. Mamizou also seems to have pretty good odds, as she isn't seen yet.
Man all this speculation for Koishi, stop giving me hope guys.
Her odds are not non-existant. She hasn't appeared yet and according to SoPM, The assumption was that you would see her in the Buddhist temple, which we have
not. Though, why would she join this conflict?