Demonic Soul Reaper of the 14th Squad

Kana is a soul reaper and the captain of the fourteenth squad that only has 14 squad members. Not only is she the captain but her zanpakutō's a demonic one at that. It has two stages and then banaki.
Her squad and her friends, will they let her go and do what she has to?
This is her important story of her time as a captain.
When the gates of hell get a bit restless what would she do?

This is my first bleach fanfic. I hope you enjoy it and sorry if it is bad.