I Can’t Exploit My S*aves Because of Their High Expectations and Evaluation

The main character has a cheat that can regenerate any wound. He buys defective beautiful s*aves on the market at bargain prices and regenerates them one after another. S*aves are cheap, beautiful, have cheats, don’t betray you, and all that good stuff. So believes the main character who is excited. However, he overlooked the s*aves’ violent past. The protagonist, who was getting carried away and letting the s*aves do whatever they wanted, was instantly made a candidate for the Demon King!? “When will you become our Demon King?” “Please let me exploit you!”