User blog comment:ChiisaiAoi/ENDED2/@comment-3341926-20130402132846

This theory, in one way or another, seems pretty much legit to me ^^ They look and act way too similar to each other (unless the mangakas coincidentally drew them in the same manner, which could also be likely, in a way)

There're only a few things left to either confirm or trash this theory:

1. Kal's backstory (how he got poisoned, who his family is)

2. More of Millea's backstory (her 'backstory' only consisted of her and Krom's love story -_-)

3. More proof that Millea could somehow be closely related to Kal (some similarities, perhaps?)

But this rant can be ignored for the meantime, I guess? I'm just a 'newborn' fan of 07-Ghost (just for a month...)