Aang, under the alias of Kuzon, came to the Fire Nation school, claiming to be a new student from the Fire Nation colonies. After school ended for the day, Aang met On Ji, who noticed Momo hiding under his shirt and warned him to keep it hidden, thinking it was a monkey. Her self-proclaimed boyfriend, Hide, seeing "Kuzon" and On Ji together, stopped by and made it clear to Aang that she was his "girlfriend" by starting a brief confrontation, during which On Ji rolled her eyes, hinting that she was not particularly affectionate toward Hide. Later, in band class where she played the erhu, Aang tried to play the tsungi horn and got chided by the music teacher for dancing in place while playing. Nevertheless, On Ji was amused by the dance steps and was even asked to be shown some dance moves b