Ohana is a shortened term for Katen, with Ka being the Oniyomi for Flower. Shunsui called Katen as Ohana as a term of endearment. It shows the strong bond between Shunsui and his Zanpakuto spirit.

Ohana, the "Heavenly Flower" spirit of Kyoraku Shunsui's Zanpakuto, Katen Kyokotsu, plays an important role in the series’ lore and themes. While the manga ended Shunsui's battles after ...