"I don't want to work!" With this thought in mind, Ninomiya Kinji worked hard and became an "upper-class stay-at-home" with his unearned income. Just when he was planning to live a lazy life like this until he died, he suddenly traveled to another world for some reason. There was a super black-hearted company where "the labyrinth is the workplace". The elegant life suddenly changed, and he had to work hard every day in a place that was once called "underground city", living a life of blood, sweat and tears. Poor working environment, long working hours, and low wages. What's even worse is the boss's power harassment, brainwashing, and exploitation of human value. He lives a "corporate animal" life that is looked down upon by all kinds of people every day. Even so, Kinji did not give up. In order to regain the strongest stay-at-home life, sometimes he has to do whatever it takes, and sometimes he has to use some conspiracy and tricks to make himself successful and rich... This is the story of the unyielding struggle of a young man who is self-centered and good at using evil ways. The fantasy story of a corporate animal of "labyrinth in another world" x "black-hearted company" begins.