Isekai kara no Kigyou Shinshutsu?!: Motoshachiku ga Isekai Tenshoku shite Nariagaru! Yuusha ga Kouryaku dekinai Meikyuu wo Tsukuriagero (Manga title) (Associated Names)

Former black company employee, Jiro Tanaka leaves his job due to overwork. In his home, he founds a job recruitment template which is from another world company. The job is to test the dungeon created by the demon king. There, the days of diving into the dungeon as a “dungeon tester” were waiting for him…