Genzo Somemiya is a supporting character in the series. He is a seventeen-year-old boy with brown hair cut to ear-length and black eyes, often wearing a headband and sporting a goatee.

His background is tied to the main character, Mayuko. Genzo is Mayuko’s childhood friend from when she lived in Gifu. He has recently moved to Tokyo, the same city where Mayuko now resides as a poor student.

In terms of personality, Genzo is described as a stoic individual. His actions speak louder than his words. His role in the story is closely linked to this quiet and thoughtful nature. He appears as a visitor to Mayuko, and his most notable action is his consistent and symbolic gift. He is often shown carrying and presenting rice, which he brings as a present for both Mayuko and the alien NieA. This act of giving rice, a staple food, highlights his practical and caring nature, as well as his role as a stable, grounding presence from Mayuko’s past life. His key relationship is with Mayuko, serving as a link to her life before she moved to the unfamiliar environment of the Enohana Bathhouse. The provided information does not detail any specific character development arc or notable abilities for Genzo Somemiya.