"Kimi no Shiranai Monogatari" is a J-pop song by the Japanese band Supercell, written by Ryo. Supercell released it as their major label debut single in August 2009 by Sony Music. The title track was the ending theme song to the 2009 Bakemonogatari anime series, and the B-side track "Love & Roll" was the theme song for the 2009 Cencoroll anime film. A music video was produced for "Kimi no Shiranai Monogatari", directed by Hirohisa Sasaki. Lyrically, the song deals with an unrequited love.