What Columbus Discovered Was Not a New Continent, But a New Exercise Called Gymnastics!

Time Bokan 24 · Episode 7 · “What Columbus Discovered Was Not a New Continent, But a New Exercise Called Gymnastics!”

The anime centres on Tokio, a junior high student living in the present time who is suddenly made a member of the 24th century's Space-Time Administration Bureau. Immediately, he learns that the history he has learned in the textbooks is wrong, and there is a more interesting version of history...