Skill [World Tame] ni Mezameta Ossan wa Dungeon de Seikei wo Tateru Koto ni Shimashita: Mushoku kara Hajimeru Shihai Musou

Also known as: スキル【万物支配】に目覚めたおっさんは、ダンジョンで生計を立てることにしました～無職から始める支配者無双～, World Tame: Jobless to Dungeon King, An Uncle Who Awakened to the Skill [World Tame] Decided to Make a Living in the Dungeon ~ From Jobless to Unparalleled Tamer, The Old Man who Awakened the Skill [Domination of All Things] has decided to make a living by Conquering Dungeons

by En Harada, Kazuha Kishimoto

His company vanished overnight—leaving him jobless and broke. But what he gained… was the ultimate skill to dominate all living things—monsters, humans, everything. In modern-day Tokyo, buildings suddenly transform into monster-infested labyrinths. As “Dungeonization” sweeps across the city, one former salaryman rises with a skill no one can match. A true dungeon fantasy—where survival means taking control of the world itself. (Source: Kodansha, translated)