The World of Sunday
Beyond all the mysteries that surround Heybot and Screw Island, there lies one final truth buried deeper than all the others. To right a great wrong, Heybot and Nejiru must uncover this secret... but will doing so will bring an end to all their Sundays?
Aired 24/09/2017EP 50 - The World of Sunday
2016
Heybot!
The anime takes place on the screw-shaped island country of Screw Island and follows the "Vocabot" Heybot and his partner, Prince Nejiru as they collect different "Vocab Screws". When the Vocabots wear the Vocab Screws on their heads, they're able to compete in "Vocab Battles," battles for who can think up and tell the best jokes.
(Source: Anime News Network)