Soko

Soko is a Het ship between Zuko and Song in the Avatar: The Last Airbender series.

Canon
Zuko and Song first met in an Earth Kingdom village while Iroh was being healed after drinking tea that was made out of a poisonous flower. They had become enemies of the Fire Nation and had to travel through the Earth Kingdom in disguise. Song noticed that Zuko and Iroh had been traveling for a while without proper nourishment. She invited them to join her and her mother for dinner since they always cook more than enough roast duck anyway.

While the group was eating dinner, they ended up talking about the war and how it was affecting the entire world. Zuko was still depressed over being an outcast from the Fire Nation and went to sit out on the porch by himself. Song followed him and attempted to comfort him. She noticed Zuko's scar and commented that he was hurt by the Fire Nation. She tried to touch it but Zuko stopped her. She then showed the scars on her leg and sympathized with him. Song assured Zuko that there was still hope because the avatar had returned. While Zuko and Iroh were leaving, Zuko decided to steal her ostrich horse. Song saw him in the act and just frowned before closing the door.

Fanon
Soko has a small amount of popularity in the Avatar fandom. It is considered to be one of the four main Zuko ships despite the fact that it is probably one of the more obscure ships. Zuko did not have any canon love interests when Song was introduced so many fans began to ship them together. However, a lot of fans had an issue with the fact that Zuko stole her ostrich horse. Soko commonly rivals the Maiko, Zutara and Jinko ships.