#shuen

As a child, whenever his father had meetings with other nations, the children of the other leaders were grouped together. This childhood friend group consisted of Shuen, Ruhong (the son of a Fire Nation premier), Kura (Earth Kingdom girl), and a Northern Water Tribe girl. No Air Nation child was brought, only a monk that looks at Shuen with a hint of familiarity.

The friendship broke down over time just because of lack of interaction as they grew up, but even more so between Shuen and Ruhong. On the day of his coming of age ceremony, Ruhong chose to agni kai against Shuen to prove his worth, thinking that Shuen's lack of fighting ability would only make him look more powerful. However, Shuen decided to try his hand at his new gadget, catching Ruhong off guard and burning the side of Ruhong's handsome face. From that day on, Ruhong became resolved to take revenge on Shuen.

Disgusted by how Shuen disgraced the son of his boss, Shuen's father immediately kicked him out of the house. So he left, bringing a chest, the only item left to him from his mother, to carry some of his belongings, and set off to the Earth Kingdom, specifically the outer ring of Ba Sing Se.

Managing to become an assistant to a mechanic specialized in making prosthetics (like in FMA), he learns about his mother's air nomad heritage from a journal hidden in the chest and finds a father in the mechanic.

They plot to learn more about Shuen's mother by trying to find the air nomad monk that seems to find his face familiar all those days ago during those meetings. They break into one of these meetings, learning that war may be brewing with Ruhong's rage and desire to prove himself and making contact with both Kura and and the monk. On the monk's sky bison, Kura, the mechanic, and Shuen escape to learn more but Shuen's mother's past.

At some point in the adventures, Kura, similarly to Katara as the Painted Lady, dressed up an onion spirit, but I honestly don't remember why.