User blog:Masterchickfila/Yachiru and Kenpachi

So, I'm really confused about the ending to the latest chapter. Has Yachiru been a part of Kenpachi's true power the whole time? And if so, how can she have her own separate Zanpakuto (the physical blade), a spirit and a Shikai? And if she was Kenpachi's power all along, then wtf was the point of the fight with Captain Unohana? And yes i am totally aware of the fact i misspell a lot.