"I don't need that kind of ability~~~” (24 years old, ordinary salaryman, voice from the heart)

Hirano Akio is involved in a traffic accident, and a mysterious man saves his life just in time. The man called himself Satan, the king of the demon world, and told Akio that he could protect him from any misfortune that might befall him if he offered his “ability” to him.

Not wanting to die, Akio signs a contract with Satan, but the price he asks for is “the best tasting sperm”...? Akio's ability was to “have the best tasting sperm in the world.” ......

The life-threatening joint sex life of an ideal man gastronomical devil and an ordinary businessman begins now------.