In 1981 Gaku Miyao and Hidekatsu Takahashi created this manga ad for a TV magazine advertising the upcoming Walther P38 Micro Change Gun Robo figure (the pre-Transformers version of the toy that would become Megatron, in gold) and its adventure protecting the protagonist, a boy named Takashi. Below I have posted my translation of it, alongside the original in Japanese. Enjoy!

(Below: Micro Change Walther P38 ad translated by Boo, text on cyan block darkened for clarity)

(Below: Micro Change Walther P38 manga ad original)