Taking a look up into the stars, Aang realized how clearly you can see the universe if you're far enough away from the city. They were camping out, far from Ba Sing Se, far from society, far from any rules, far from… Judgment. Aang had to share a sleeping bag with Sakka for the night, and there were no complaints on his end. He couldn't keep up this façade for much longer; his lust for Katara. He grew tired of keeping his homosexual desires under his hat, longing for Sakka, but pretending to like Katara.
He couldn't contain it any longer. He felt the warm beats of sweat dripping down Sakka's back. He gently put his arm around him, Sakka cuddled up to him in his sleep. Aang's throbbing erection could no longer be contained in his pants, so he took them off. He pushed on the top of the sleeping bag, so that air would rush in. The breeze felt good, cooling the sweat off his penis. He began rubbing. It was sticky, but felt nice. He noticed Sakka was only wearing underwear, but that only made his erection grow larger.
He knew he was out cold, as they drank quite a bit that night, and when Sakka's drunk, he sleeps like a rock. He pulled down Sakka's underwear, slowly but efficiently, gently, as not to wake him up. He put this tip of his penis against his butt cheeks, and continued to swiftly rub his penis. Sakka snorted in his sleep, which almost made Aang jump right out of the bag.
"Aang?" Sakka said in a jumbled, drunk, half asleep manner. "It's too hot in here, I'm going to sleep out in the air". He stumbled a few feet from the bag, and then collapsed on the ground. Aang was left to his own devices. He thought he might as well have some exotic fantasies while he waits to finish.
Often, Aang would imagine Monk Gyatso fisting him hard, on the back of his bison in the old temple of the Air Nation. He began rubbing faster and faster. He began feeling the peak coming… Closer and closer. He started breathing heavily, panting, moaning and then, in a split second—
Pure ecstasy.