A kid finds a time machine and immediately starts breaking everything with it. The show moves so fast you don't have time to think, just react, which is exactly the point. Five minutes means every gag lands or dies; there's no room for setup, only punchline. That witlessness isn't a character trait, it's permission to do whatever's funny right now. This is what happens when someone gives a comedy writer five minutes and tells them to make a kid laugh before school.
A dim-witted boy discovers a time machine tucked away in a cave close to his home, and his adventures with it make up this comedy with a science fiction twist. Each episode runs about five minutes, and the shorts were broadcast as part of the morning TV show Ohayo Kodomo. Expect light, goofy fun built around a not very bright kid and a very powerful gadget.