Bending the Straight Dragon-Prince Every Night (Quick Transmigration)

Every story has characters like these: they might be the Dragon King’s archenemy, his lackey, or his brother. Either way, they orbit the Dragon King. One day, they were bound to the "Dream-Ride the Dragon King System." As long as they rode the Dragon King and successfully made him bend, they would receive incredible rewards. They agreed without hesitation. World One: The archenemy rides the self-made Dragon King. By day, they clash fiercely. At night, they enter his dreams and ride him until he cries, the corners of his eyes reddening and his ass turning red. World Two: The lackey rides the straight Dragon King. By day, he calls him "big brother." At night, big brother is the one doing the calling. World Three: The brother rides the Dragon King. Even after doing it, they're still good brothers. Theme: Love well