In Meikyuu Black Company, Kinji Ninomiya finally believes he has secured the self-sustainable NEET life he spent years chasing. From the penthouse of one of his apartment buildings, he looks down on ordinary commuters struggling through a typhoon, ready to enjoy the comfort his ruthless work ethic has earned him. That dream collapses when a mysterious portal suddenly opens beneath him and drags him into another world.
There, Kinji is forced into the service of a mining company that worships profit and shows no concern for employee safety or well-being. Trapped inside a harsh workplace that treats people like disposable labor, he refuses to accept a life of endless exploitation. He quickly starts plotting new ways to get rich, using his sharp instincts and relentless drive to survive the system rather than submit to it.
As he builds connections with the people around him and searches for an escape, Kinji keeps pushing against the rigid rules of his new corporate prison. Meikyuu Black Company follows his struggle to reclaim his freedom in a world where ambition, labor, and greed are tightly entangled.