Lol, Issun is a Poncle. ;3 //Okaminerd. xD I have played through Okami way too much, and I've played through Okamiden like... 5 times already? And I have to say, I think that Oki's the father. Waka?... I just don't think so, seeing as Chibi is 100% wolf. xD
I'm pretty sure it's Oki.. but y'know, she was on the Celestial Plain. It could be another God for all we know. xD