Board Thread:Event Discussion/@comment-8276741-20140912212227/@comment-17760674-20140915211107

They've done some questionable type matching, but for the most part, they do assign types logically. Hence why most Fallen-Pure pairs are Phantom-Divina or Anima-Anima compared to other combinations.

Swords are definitely Anima. There have been very few--if any!--cases where they assigned the spirit of a sword to be a non-Anima. Type mismatches for Phantoms and Divinas or for non-weapons that ought to be Animas are much more common (relatively speaking, of course; there aren't mismatches everywhere).