Aooo (γγγΌ) are a Japanese rock band formed in 2023. The group is comprised of former Idol Resistance and Akai Kouen member Riko Ishino (η³ιηε) on vocals and guitar, bassist Hikaru Yamamoto (γγΎγγ¨γ²γγ), and vocaloid producers Surii (γγγ) and Tsumiki (γγγ) on guitar and drums respectively. The band's name refers to the four members' different blood types. Their debut self-titled album was released in October 2024. Read more on Last.fm