Big Comic Original is a Japanese seinen manga magazine published by Shogakukan, aimed at an older adult and mostly male audience. It is a sister magazine to Big Comic, the biggest difference being that it goes on sale twice a month in the weeks Big Comic does not. Cover artwork usually features a dog or cat, and a haiku. The dozen or so manga serials running at any given time feature a wide variety of material, from historical dramas and suspense to sports and romance, with relatively little science fiction or fantasy.

Nobuyuki Fukumoto is a Japanese manga artist, well known for his work including unique and original gambling ideas, deep psychological analyses of characters, and his distinct art style. Gambling and yakuza are recurring themes in his manga. In English-speaking countries, he is best known as the author of Kaiji, a gambling-related manga, and Akagi, a mahjong-related manga. In 1998, he won the Kodansha Manga Award for Gambling Apocalypse: Kaiji. An onomatopoeia, "zawa", meaning an uneasy atmosphere, frequently appears in his comics and is considered his trademark.