What is "riki-oh"

is a manga which later adapted to two OVAs and a live-action film named Riki-Oh: The Story of Ricky.

Created by Masahiko Takajo and Tetsuya Saruwatari, the story is about a young man who has learned the art of Qigong from one of Chiang Kai Shek's bodyguards and has become so strong that he can literally punch holes through people and solid objects. It was serialized in Business Jump from 1987 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.