ゼロの秘密 付録 [Zero No Himitsu Furoku / Secret of Zero Supplement]

In 1961, Shueisha published a single-issue supplement titled Zero No Himitsu Furoku, a one-shot comic tied to the larger "Secret of Zero" concept. The issue is most strongly associated with artist Noboru Kawasaki, whose energetic style defined this brief but notable entry in early 1960s Japanese manga. As a standalone supplement, it offers a compact glimpse into the era's adventure storytelling and Kawasaki's formative work.