[DreamSword]

Kusaka and Date + anyone. Because really, no one would be able to bear them and seeing them die various alternate ways would be great.

Or heck, pair them with eachother. They'd make great friends, I'm sure. (slight hyperbole on that but still, hate 'em both).

For a for real answer, Hikawa from Agito and Goto from OOO trading place would be rather interesting, considering they share alot of similar motifs, yet had to deal with rather different situations.