The protagonist died suddenly in the company due to long overtime work. There was an opportunity for reincarnation after death, but the protagonist felt that he was too tired and the human world was not worth it, so he gave up the opportunity to return to the human world. He planned to live in the underworld from now on and not care about human affairs. However, in the end, he found that if he gave up and returned to the human world, he would still face various problems.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.