Polarshipping

Polarshipping is a het ship between Mai Kujaku (Mai Valentine) and Jonouchi Katsuya (Joey Wheeler) in the original Yu-Gi-Oh! series.

Canon
They first meet as opponents at the Duelist Kingdom tournament but become friends after Mai changes. After Mai falls in a Shadow Game in Battle City Jounouchi goes to great lengths to try and help her.

Fanon
Polarshipping is one of the more popular shippings.

Trivia
Fans gave this shipping it's name because they felt like Mai and Jonouchi were polar opposites of each-other.