The secret of the time machine

Overview

Hiroshi, Yasuko, and Susumu, who found the "path to the future," disappear. Maybe he was kidnapped by Matenro... While Mr. Ochiai and the three parents were worried, the three in question ended up in the world of 2007 AD. During this period, severe food shortages occurred due to droughts occurring all over the world. Everyone was suffering from hunger.