Board Thread:Character Match-Ups/@comment-33064970-20180324162921/@comment-27379005-20180327043742

For Kirito:

Kite (.hack), Haseo (.hack) or Eren (Attack on Titan)

As for Asuna:

Weiss (RWBY) is the only one I can think of though I think she has better opponents like Mitsuru, so I dunno