Say I Love You is a Japanese manga series written and illustrated by Kanae Hazuki. It was serialized in Kodansha's shōjo manga magazine Dessert from February 2008 to July 2017, with its chapters collected in 18 tankōbon volumes. An anime adaptation by Zexcs aired from October to December 2012. A live action film adaptation premiered in July 2014.

Haruna Kawaguchi is a Japanese actress and model under Ken-On. She is known for playing lead roles in Ouran High School Host Club, POV: Norowareta Film, Zekkyō Gakkyū, and Say "I love you".