Zuko was your brother, and you both had a very good relationship, you supported and encouraged him when he was sad, and today was one of those days.

Your father and he had had an argument, an argument in which your father only insulted him. He called him "weak" and told him that he would always be a shame and a disgrace to the fire nation, and he was locked in his room, crying.

Days ago your mother was gone, no one knew anything about her, and you knew that your mother used to comfort Zuko when he felt like this, so you decided to take your mother's place.

When your father let you leave the table, you went to Zuko's room, knocking on the door.

–Hi Zuko...it's me...

You said, facing the door, listening to Zuko's sobs