NaO, born Naomi Aida, is guitarist and sub-leader of the kawaii metal idol band BanShee. As second-in-command to leader RiN, she holds significant responsibility within the group. Her bond with RiN reflects a deep, long-time friendship, mirrored in her enduring connection with SaKo—the band's bassist and primary composer.

BanShee's lineup includes Tenko, Kogata, SAWA, JOKER, KONY, Sumire, Akamaru, and MINA alongside NaO. Her contributions center on guitar performances integral to the band's music.