|Name||Yagyū Jūbei Mitsuyoshi|
|Kanji||柳生 十兵衞 三厳|
|Rōmaji||Yagyuu Juubei Mitsuyoshi|
Yagyū Jūbei Mitsuyoshi (柳生 十兵衞 三厳, Yagyuu Juubei Mitsuyoshi) is a skilled Navigator and member of the Seraphim Pirates crew. Yagyū, a former member of the Marines, abandoned his former life after being tempted with the idea of "unimaginable power" only to find himself in the midst of Evangeline and her crew, where he was trusted as their Navigator.