Yuusha ni Haiboku shita Maou-sama wa Kaerizaku Tame ni Mamono Guild wo Tsukuru Koto ni Shimashita.  

Monster Guild: The Dark Lords (No-Good) Comeback!, The Comeback of the Demon King Who Formed a Demons Guild After Being Vanquished by the Hero, 勇者に敗北した魔王様は返り咲くために魔物ギルドを作ることにしました。, Monster Guild: The Dark Lord's (No-Good) Comeback!

The demon king was having a tough time defeating the hero. despite thinking that he had won, the hero kept coming back and eventually defeated the demon lord. this left the demon king feeling weakened and frustrated. however, the demon lord found a way to save his life by sending his soul into an empty vessel. although this gave him some time, the demon king still struggled with ruling the world as he was too weak to defeat even a child.

Yuusha ni Haiboku shita Maou-sama wa Kaerizaku Tame ni Mamono Guild wo Tsukuru Koto ni Shimashita. has been published in English as Monster Guild: The Dark Lords (No-Good) Comeback! by Seven Seas Entertainment since October 19, 2021.