"In this world, there are all kinds of perils! I'll teach you how to save yourself from those dangers, you moron!" So says Dangerous Jiisan, always looking out for his grandson. But, lacking any common sense, he usually makes things catastrophically worse in ridiculous, funny ways.

Zettai Zetsumei Dangerous Jiisan won the 50th Shogakukan Manga Award for best children manga in 2005.