is an editorial category of Japanese comics marketed toward young adult men. Together with (manga aimed at adolescent boys), (adolescent girls and young women), and (adult women), it is one of the primary demographic categories of manga.

emerged as a category in the late 1960s, when a generational shift motivated the manga industry to cater more to adult readers, and quickly came to combine mass-market appeal with more serious literary ambitions than those typically found in the manga of that era.