Allen, a reincarnated boy, is given the cheat ability [regeneration] by the goddess. Although she can treat all sorts of injuries and illnesses, her opportunities for success are limited, so she plans to [regenerate] slave girls and live a slow life in a harem. However, the cheats of the fully cured slaves were so bad that the crops and living environment were ripened in the blink of an eye. The main character, Allen, who is deprived of opportunities one after another, tries to fight back with modern knowledge, but the talented slaves absorb this knowledge and become a huge success in business. The shadow of the main character is getting thinner and thinner...! ?