Board Thread:General Discussion/@comment-3010659-20180718035155/@comment-3010659-20180818000407

Kenpachi didn't even know his Zanpakuto's name. I think that everyone believed it was constantly released because everyone thought it was ridiculous that he killed the previous 10th squad Captain with just his base strength. Still, we know his Shikai now so there is no doubt. My post is just a theory, but since Byakuya comment on that I think it's probably true.