Shu

シュウ

Shu is "plucky," daring, and acts without thinking. He typically charges headfirst into trouble on his own, without consulting anyone. He shares a special bond with Kluke that he refuses to acknowledge aloud. Shu possesses the Blue Dragon shadow, which Jiro and Zola sought at the outset due to its unspeakable power. Initially, he does not appear very intelligent, but as the narrative progresses, many come to recognize the strength of his willpower.
Shu is practically obsessed with knight masters, a fixation that led him to seek out Jiro and Zola, whom he believed to be a true knight master. During his journey alongside Kluke, Jiro, and Zola, he encounters Marumaro, who is perverted yet dedicated to justice and wields the Saber Tooth Tiger shadow, as well as Bouquet, his "bride-to-be," who possesses the Hippopotamus shadow, which is unable to fight.