Baek Hwisu is an ordinary office worker with a very unordinary constitution. He produces an absurdly excessive amount when he comes. What used to be just a trait has long since become a complex, and he’s been living in half resignation to it. Then one day…

“What? I’m the human with the strongest vital essence on Earth, and the only hero who can save an incubus prince dying of malnutrition?!”

In exchange for waking Prince Amon, who has been asleep for nearly a hundred years, and feeding him until he’s satisfied, Hwisu is promised the complete cure of his beloved cat, Hotteok, who has cancer. Leaving for the demon realm, Hwisu sets off on this unbelievable deal. Can he really save Hotteok and Amon, all with what’s between his legs?

Original Webtoon