I have a little character concept that I've been working those past few days. It... involves a dõjutsu and I've been dabbling with yin and yang release as well. I do understand that it's pretty [i]"fishy"[/i] to make custom/original dojutsu. I mean, I'm not particularly the most creative writer out there and neither the most knowledgeable on the Naruto field :P 

At any rate, that's been pretty helpful. I might as well scratch yin-yang and keep yin [b]and[/b] yang. Mixing the two is too godly, whereas the two separate are literally everything.