A human x the dragon god (a cuntboy) who summoned him for mating. Ryota, who lost his parents when he was young, lives a peaceful life in his village. But one day, he is summoned by the village's guardian deity, a dragon god. When Ryota arrives, he meets a beautiful man with the lower body of a woman, Youlong. "You'll breed me and pour your seed into my womb. That is your role here." Ryota, who thought he would be devoured as a sacrifice, instead finds his huge, virgin cock being devoured by the dragon god's pussy instead. Initially flustered, Ryota is unable to resist the sight of his first pussy and Youlong's seductions, and thrusts uncontrollably. In the bath, during fieldwork, and after as well... When Youlong goes into heat, they mate. When Ryota's cock is excited, they mate... The mating will continue until the dragon god conceives...