A social beast who died from exhaustion in his previous life wanted nothing more than to lie down and be a waste after his rebirth. It turned out that his former boss had placed a position on him and told him: Your death was not an accident, but a murder. So he was involved in a revenge game - but he didn't follow the routine. When others were aggressive, he would kill with a knife; when others were killed, he would hide behind the scenes and watch the show. On the surface, he is a useless assistant, but secretly he plays tricks on his enemies.