>Go to front of the party. "Alright, before you all leave, I have a couple of announcements, including why you all are here. First, as of...well, a few minutes ago (or so), Shinmyoumaru," gesture towards her, "and I will be getting married. Details are to be announced."
>"Second, you are all here because I am planning to rule the universe from the comfort and relative safety of this palace. It would be easiest to get you all on board now and ask you, rather than try to ask you all separately on the surface. So, whaddya say?"
>"Lastly, don't worry about provisions and such, we have a food synthesizer and there's plenty of room in the palace. Plus, I can get you pretty much whatever you want, if given enough time. Within reason, of course."
>"Also, has anyone seen Sanae? She mysteriously vanished after some random girl ate some random guy who teleported up here without my permission, and she's supposed to be in on this. If anyone has seen or sees her in the future, please let me know. Thanks."
>Wait for reactions, objections, approvals, and the like.