It's Like the Yonko Being Auctioned by Traffickers While He Was Taking a Nap

When he woke up, Luke, who had successfully been promoted to the level of the Demon King with a combat power of about four emperors, found that he had been auctioned off! Good guy, a weakling who calls himself a Celestial Dragon actually claims that Luke is his slave! Since he is looking for death, Luke will help him! There are also the pirates who sold their sleeping selves to this auction house, as well as the people related to running this auction house. Don't let anyone have a good time, everyone must be dealt with! It just so happens that it takes tens of thousands of human souls to be promoted from a demon king species to a true demon king! Just kill until the sky is dark and the earth is dark! Since then, the world of pirates has gained a terrifying demon king who makes all creatures tremble! P. S. The protagonist has never watched One Piece! After the pirate chapter, there is slime. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.