A Floating City?

The orc king turned his head and looked towards the voice to see the elf prince standing there, staring at him mockingly and frowning. But after thinking for a moment, the orc king's lips curled up as he said: "Elf prince, I know where your sister is." 

"Oh?" The elf prince was none other than the elven crown prince and Noa's brother, Prince Teleth! "Tell me, where is this sister of mine?"

"Humph! Do you think I will just tell you?" The orc king grinned as he stood up and dusted himself off. "I want fifty women, and I will tell you. But they need to be able to get pregnant easily!"

"Orc king, you may be powerful, but you are in elven territory. It is easy for me to kill you. It's not like your orc clan will go extinct if one orc king is killed. After all, there are many of you." Prince Teleth crossed his arms in front of his chest and lifted his chin high.