Nagi is very tall with a lean but muscular build, however, he usually slouches, which is why he looks shorter than he actually is. Nagi is shown to have short white hair that leaves a V-shaped fringe in between his eyes like Isagi. He has gray-colored eyes with large irises. Back in high school, Nagi wore a school uniform consisting of a white blazer with a cascading layer star pattern on the collar though he wore a dark hoodie under it instead of a dress shirt and tie. He wore the dress pants