Tells a story that is set in the past. That setting is usually real and drawn from history, and often contains actual-historical persons, but the principal characters tend to be fictional.
Examples:
Vagabond - Inoue Takehiko and Yoshikawa Eiji |
Rurouni Kenshin - Nobuhiro Watsuki |
Basilisk - Fuutaro Yamada and Misaki Segawa |