Eyeshield 21 Episodes
Summary: The Legend of Korra – Taking place 70 years after the events of “Avatar: The Last Airbender,” this story follows the adventures of the Avatar after Aang – a passionate, rebellious, and fearless teenage girl from the Southern Water Tribe named Korra. With three of the four elements under her belt (Earth, Water, and Fire). 
Watch Eyeshield 21 Free
Plot Summary: Kobayakawa Sena is a little guy who always get picked on by the bullies in school. Since elementary school, he always play the role of the 'errand boy' to the extent that he has become swift and fast in his movements. Coincidentally, Hiruma Youichi and Kurita Ryukan are looking for a fast running back for their American Football team (Amefuto) and want to put Sena in the team.
Eyeshield 21 Episodes 133
To hide their new 'star' player from the eyes of other High Schools, Hiruma encases Sena in a Amefuto helmet with a dark visor and name him Eyeshield #21.