User blog comment:ChiisaiAoi/ENDED2/@comment-218.186.15.10-20130518151346

'...both part of the Barsburg lineage, so they will still be related somehow.'

That certainly is true. If Karu turns out to not be Millea's brother, I can imagine him being her cousin. Or perhaps her stepbrother? Who knows...

By the way, just out of curiosity...do you like Ouka?