Wanna... fuse?
No seriously, look up the Digimon Cyber Sleuth game, where these two fuse to become a new Digimon. It's the gayest transformation sequence I have ever seen in a non-yuri work.
Well, Momo is wearing the same Crisis Management outfit as Shamiko and what I have seen from fanart... I can actually predict the spoiler already. That will be interesting.
Tails being erogenous makes no sense of course, but for a demon whose design is pretty similar to a succubus I wouldnt rule it out. And either way, getting licked by Momo would make anyone shiver.