Ginnosuke is a young boy with a round nose and pink hair. The top of his head is bald, leaving hair tied in a topknot in the back, long sideburns, and bangs with an ahoge on his forehead. He wears a light blue kimono with sharp, dark blue triangle patterns arranged in circles.
Ginnosuke seems eager to answer his teacher's questions. He supports the closed nation policy and scorns those rebelling against Kurozumi Orochi.
Wano Country Arc
During a lesson held by Sarahebi, Ginnosuke answered a question about the concept of a closed nation. He later appeared in Rasetsu Town, mocking the imprisoned Kozuki Family sympathizers with another boy from his class.