Hajime is a tall, young man with notably toned arms and a solid, well-built chest. He has green eyes with straight lines running across his pupils, resembling a prohobition symbol, as well as short, somewhat spiky brown hair with an ahoge that moves according to his emotions. He wears a simple white shirt with the emblem of his previous high school embroidered on the hem, a school badge on the left pocket, and a green tie that also bears the same emblem. He also wears dark pants and red-and-white sneakers. Hajime is a skeptic, realist, and pragmatic to the core, and he often times comes across as cynical due to his chronic overthinking tendencies. He is noticeably more skeptical of the group's peculiar circumstances than anybody else from the moment he steps foot on Jabberwock Island, owing to his habit of rationalizing everything that is foreign to him.