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Khan knew that his behavior could appear disrespectful and arrogant, but acting as a mere ambassador would only make the Nele treat him like a political figure from the human race. He didn't want that, especially since his intentions went beyond the simple search for the reinforced fabric.
Behaving normally without holding anything back was the only solution that Khan could find. Some Nele might not like his character, but he believed that they would appreciate his honesty once they accepted him. That moment might never arrive, but Khan didn't want that outcome to be his fault.
Jenna wasn't wearing anything fancy. She had a loose dark-green jumper that covered the entirety of her waist, and her dark trousers were baggy. They also had a few holes and spots, which hinted at their extensive use in the woods.