User blog comment:Kenpachi Yachiru/Unohana and Zaraki/@comment-6088207-20130124015301/@comment-5398287-20130124041454

1. No idea.

2. Yama specifically told her to stay out of the battle.

3. Kyouraku wants Kenpachi to become stronger so SS won't get its ass kicked in the next battle, and to that end, he is having Unohana fight/train him to make him learn proper Zanjutsu.

4. Still no idea.