MF Bunko J (MF文庫J?) is a publishing label affiliated with the Japanese publishing company Media Factory. It was established in July 2002 and is a light novel label that is aimed at young adult males with a focus on Visual Novel style plots and harem romantic comedies.
Label names "J" is for "Japan" and "Juvenile" have meaning.
Read more about MF Bunko J: Light Novels Published Under MF Bunko J