Pairings, huh? Well, for Yuri, from the looks of the Receivers... Yuri is the exact opposite of what poor Mari was looking for, as she's something of an enforced hassle at times. Chie would basically be team 'and we don't actually seem to be able to experience any sort of stress at all'. Adrian, on the other hand, is probably inappropriate simply by dint of being male, in this case. And I think that's it for already-paired Receivers: one person who's got the exact opposite responsibility of what they want, one person that would create the most relaxed pair in the RP.

As for Momo... I'm not so bothered by who she ends up with, though I think the fact that she's someone that talks way too much about completely inane things would make it a [i]really[/i] bad combination with Sir Grumpy (Shun). Unless it is just a front, in which case driving him mad would be such fun. :P