Morita-san wa Mukuchi (森田さんは無口, lit. Morita-san is Silent) is a Japanese four-panel comic strip manga written and illustrated by Tae Sano. The manga was originally published in the March 2007 issue of Takeshobo's Manga Life magazine, and later moved to Takeshobo's Manga Life Momo and Manga Club magazines. The first tankōbon volume was released in January 2009; as of February 2011, three volume have been published. An original video animation (OVA) was bundled with volume three of the manga in February 2011, and another OVA was released separately in March 2011. A TV anime series produced by Studio Gram (the same as the OVAs) began airing in Japan in July 2011.
The four-panel manga follows the everyday life of Mayu Morita, a girl who is exceedingly gentle and thoughtful, to the point that she does not say much of anything to anyone in high school.