Golgo 13: File G-13 o Oe

Golgo 13 (Japanese: ゴルゴ13, Hepburn: Gorugo Sātīn) is a Japanese manga series written and illustrated by Takao Saito, published in Shogakukan's seinen manga magazine Big Comic since October 1968. The series follows the title character, a professional hitman for hire. Golgo 13 is the oldest manga still in publication, and its tankōbon edition was certified by Guinness World Records as the highest number of volumes for a manga series. Before his death in 2021, Saito said that he wanted the manga to continue on without him; he had previously said that he was worried that the manga might be left unfinished.