Voice or Noise (Japanese: ボイス・オア・ノイズ Hepburn: Boisu oa Noizu) is a shōnen-ai manga series by Yamimaru Enjin, author of the one-shot manga The Way To Heaven and illustrator of the novel Eat or Be Eaten. The story focuses on the relationship between a junior high school student, Shinichiro, and a college professor, Narusawa, both of whom have the ability to speak to animals.