Fukuzawa is a tall man who almost always has a stern expression on his face. He has long silver hair, which ends just above his shoulder, and metallic blue eyes, which appear to have wrinkles eyebags under them.

He is always seen wearing a green yukata under a black haori (a traditional Japanese thigh-length kimono-style jacket, commonly worn by men) with golden borders with a zigzag pattern, and zori (flat sandals) with white tabi (toe-divided socks).