Tatsuno is a deliveryman who is heavily in debt. His mother is seriously ill and needs huge medical expenses. He is forced to take the high-risk order of "Midnight Delivery to No. 37 Old Lane" and strays into the "white hat ghost talk field" - the rules require that "when the recipient wears a white hat, he must first hand over the cigarette and then collect the money, and must not look into the other person's eyes during the entire process." Tatsuno almost broke the rules and was attacked by a mysterious shadow. At the critical moment, he awakened the "Rules Insight" power (the ability to see loopholes in the rules), killed the mysterious shadow and absorbed the mysterious energy into martial arts. After that, he discovered that by taking food delivery orders in the field of ghost stories, he could not only earn high commissions to save his mother, but also quickly improve his martial arts. However, the Monster Breakers Alliance regarded him as a "resource plunderer" and suppressed him at every turn; what's even weirder is that the fields of ghost stories he came into contact with seemed to be related to the "Mist Experiment" that his mother participated in ten years ago. While Tatsuno used his identity as a delivery boy to travel through various realms of ghost stories to break through and upgrade, he also traced his mother's past. He gradually grew from a low-level ant to a warrior god who could formulate "anti-rules" and broke the class monopoly.
