Kayu (カーユ) is a Human Samurai-Fisherman and a member of Oceanic Systems, working as the right-hand man of his guild-master, Michitaka.


Kayu is tall and thin, appearing to be in his twenties, has scruffy dark blue hair, chin stubble, bushy eyebrows, and his eyes constantly appear to be squinting. He wears oriental clothing in varying shades of blue, and black boots.




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