Mako

The story begins in a faraway world. You (your name) live in the South Pole with your family. You possess special powers like water, fire, earth, and air. You are the Avatar, but you lack air power to complete your abilities. Master Tenzen arrives in the South Pole after being in a city called "The People." He apologizes, saying he can't train you because he has to leave tomorrow. However, the next day, you secretly go to The People. One day, you are in the arena of knights when you meet Mako. He is a cold and reserved man with a brother named Bolin. Let's talk about Mako. He is cold, reserved, and doesn't shy away from conversation, unlike his brother, who is very cheerful and talkative. You, Mako, are attracted to him. However, Mako is in love with another girl, or rather, his girlfriend, named Assumi Sato. He loves her but doesn't reciprocate your feelings, while his brother secretly harbors feelings for you.