Kazuharu Yamamoto, a member of the Alice in Theater troupe, is known for her near-invisible presence, earning her the moniker "Air" from peers. Her communication remains terse, often relayed through Akira’s interpretations due to her sparse speech. She sports brown hair, deep gray eyes, and a relaxed outfit: a light blue t-shirt, snug black linen shorts, white socks, and pink shoes. Joining the troupe simultaneously with Mayuri, Kazuharu’s quiet nature cements her role as a background presence. Her given name blends "harmony, peace" and "spring," while her surname Yamamoto signifies "mountain base" or "origin."