Xiaobai is really Ukitake's son!
Not gonna lie to you. When I become Hitsugaya Toshiro's mother and marry Ukitake Jūshirō, I will consider letting the child change his father's surname^_^
Wow hahaha... Who said that to become a boss in Soul Society, you have to be the captain yourself?
Son, you don't have to worry about growing up. Mom will protect you. Because... I watched "Death"!
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Note from the author: Alas, my hands will itch after reading too much Bawang. This is our first meeting, please take care of us!