Kaori Oda (Born May 11, 1988 in Kanagawa Prefecture) is a Japanese singer and is a member of both Sound Horizon and CHIX CHICKS (formerly known as BJ Girls). She also frequently collaborates with Yuki Kajiura in her FicionJunction project (where the duo is known as FictionJunction KAORI). Her debut single, Brilliant World, was used as the opening theme for the game Luminous Arc. Her second single, Calling, is the ending theme of the anime Baccano! and is composed by Yuki.