Firelord, with all due respect, you cannot marry a Waterbender and sully the Royal Family's pure lineage! She's a peasant!
Zuko banged his head on the table and ordered the noblemen to shut up. They did. As calmly and patiently as possible, he attempted to convince them to let him marry Katara. Actually, he would marry her anyway, but it would be a lot easier with their approval. The Royal Family has suffered from too much inbreeding. The healers have determined it as the cause of my sister's madness. By marrying and bearing children with a Waterbender, I can ensure no further bouts of this malady. But my lord, she is a peasant, unworthy of you! Katara is the daughter of the Chief of the Southern Tribe. With the death of the Northern Princess, Yue, she is Princess of the Water Tribes. She is the Avatar's Waterbending teacher, the only female Master in the world and the Southern Water Tribe Ambassador! The stuffy noblemen could not think of a way to rebut his arguments, so grudgingly blessed the union, with conditions.
How did the meeting go? Well, we can get married. But there are conditions. Which are? Apparently, only a male Firebender can be my heir. Katara thought for a moment. Just as long as one of our children is a Waterbender, I'll be happy. Zuko smirked. We're going to be very busy, aren't we?
When Firelord Zuko was told by his wife that he was going to be a father, he danced around the Palace singing. Then he walked into a Four Nations meeting in his sleeping attire with his crown on sideways. Everyone stared at him as though he had gone mad. His brother-in-law threw a fit, going on about 'the jerk touched my baby sister.' Zuko had to remind him that he had asked for him to bless their marriage. Sokka replied that yes, he could marry her, but he never said he could do anything else. The Firelord spent the rest of the day avoiding his boomerang wielding brother –in-law.
The next day, the nobles gossiped about the embarrassing happenings that the young Firelord was embroiled in, including death threats from his brother-in-law and his terrible, off-key singing, both of which were the truth. Some even suggested that the child wasn't his, as it seemed that Sokka was remarkably shocked by the news. The poor, embarrassed and frustrated Firelord retired to his chambers, hoping to get a good night's sleep.
Zuko! Get me some Fire Flakes!
I don't own Avatar the Last Airbender.