Whisper of the Heart, known in Japan as Mimi wo Sumaseba(耳をすませば, lit. If You Listen Closely) is a Japanese manga series written and illustrated by Aoi Hiiragi. The manga, produced under the original title Mimi o Sumaseba, was serialized in Shueisha's shōjo manga magazine Ribon between August and November 1989. A single bound volume was released in February 1990. A second manga by the same author entitled Mimi o Sumaseba: Shiawasena Jikan was serialized in Shueisha's Ribon Original in 1995; a single volume of this manga was released in February 1996. A single volume containing both manga under the title Mimi o Sumaseba was released in July 2005.