Maki Ohguro (大黒 摩季 Ōguro Maki) is a Japanese pop singer and songwriter. In the Kamen Rider Series, she performed Anything Goes!, the opening theme song of Kamen Rider OOO. She, along with Koji Kikkawa, also performed HEART∞BREAKER, the theme song for Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie War Core.