Riki-Oh (力王, Riki-Ō) is a manga which later adapted to an anime series and live-action film. Created by Masahiko Takajo and Saruwatari Tetsuya, the story is about a young man who has learned the art of Naike Kenpo from one of Chiang Kai Shek's bodyguards, Cho Zenki, and has become so strong that he can literally punch holes through people and solid objects. It was serialized in Business Jump from 1983 to 1990 and later published in 12 volumes.
Outside Japan, it was translated and published only in Hong Kong by Comicsworld in nine volumes. The only difference between the two editions, besides the different number of pages in each volume, is the absence of the short story "N.Y. Dust", which is unrelated to Riki-Oh, in the Hong Kong edition.
The manga, anime, and live-action film all contain gruesome violence.