Proper Japanese spelling of name.[]
The furigana in his name belongs to the Ta branch of the Japanese alphabet, not the Sa branch. Americans have a nasty habit of messing up secondary branches "Da, dzi, dzu, de, do" & "za, ji, zu, ze, zo." The name Kadzuki is always misspelled Kazuki. Kaduki would have been closer. Lastly, if you look up fanarton Japanese websites, his name if often spelled "Kaduki" or "Kadzuki" in english letters.