Monster Guild: The Dark Lord's (No-Good) Comeback!

A comedic and (anti)heroic fantasy manga in which a defeated villain builds a motley crew for his monstrous comeback!

Official English-language publication of the Japanese manga:

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。 | Yuusha ni Haiboku Shita Maou-sama wa Kaerizaku Tame ni Mamonogirudo o Tsukuru Koto ni Shimashita.