Yeah i know Unohana is the strongest in SC. She probably goes berserk when she fights. Thats why we havent seen her fight yet. I think the only person that can be on her level now is Kenpachi. She they got a past together in some way. Since Kenpanchi named his vice captain after her.

yep Unohana was the only person Zaraki ever respected so he named his vice Captain yachiru. Retsu itself means "violent".

He was trained by Yamamoto for a day in the art of killing. Only for a day since he didn't want Kenpachi getting too strong apparently.

Now they want to teach him everything so he'll be much stronger than he already is.

There's a lot of talk about what it means by teaching him 'the sword'. I think it's just the title for set of skills he'll be learning while some think he'll be learning his swords name.

IIRC he lost his memory at one point so he might know some skills but who knows.

it might come back in 3 years or so , that way it can be all mannga material and not Filler naruto basis to keep the show going

If you stopped where the anime ended your not that far off. Start with chapter 480. The story got a lot better. A lot of people hate how Kubo tells Bleach. He has been giving us clues this whole time like a mystery.

thanks a lot, i really appreciate it! :D