Their name refers to Onmyōdō and the gathering of yin and yang (Inyo in Japanese, formerly Onmyō), and the theme of opposites and cosmic dual forces are prevalent in their lyrics.
[3] Each of the band member's stage names feature a double entendre with a sense of humor and make references to cats.
[3] Matatabi was influenced by heavy metal bands such as Judas Priest,[4] Annihilator, Destruction,[5] and Rush.
[4] Matatabi also hailed Ningen Isu as the precedent playing heavy metal and singing in Japanese.
The band's hit song, "Koga Ninpocho", was written for the Studio Gonzo TV animated series Basilisk, which was based on Yamada's novel, The Kouga Ninja Scrolls.