Japan's Top Inventions
Season 4
Episodes
Episode 1
Jan 14, 2021
Episode 2
Jan 28, 2021
Episode 3
May 15, 2021
Episode 4
Jul 16, 2021
Episode 5
Jul 31, 2021
Episode 6
Oct 30, 2021
Episode 7
Nov 26, 2021
Episode 8
Dec 11, 2021