朝日ソノラマ
The sixth arc followed closely after the fifth arc. Arcs such as the "Deinonychus Arc" (appeared in "Monthly Shōnen Jump" (Shueisha)) and "Green Hole Arc" (appeared in "Play Comic" (Akita Shoten)) were depicted, then long after, the "Underwater Pyramid Arc" was serialized in "Monthly Manga Shōnen" (Asahi Sonorama).