The story follows the strongest hero who, even in death, cannot escape his divine mission of saving the world. He is reincarnated not into a fantasy realm of monsters and demons, but into the modern-day entertainment and red-light district of a city known as the sleepless town or the city of pleasure, where lust and desire run rampant.

The protagonist, who practiced strict abstinence during his original life as a hero, must now navigate this dangerous and hedonistic new environment. His mission transforms from slaying demon kings to saving lost women who are being targeted by dark forces lurking in the shadows of the nightlife district. To accomplish this, he wields a unique power called the sacred skill, which is specifically effective in this erotic modern fantasy setting.

The series is an erotic contemporary fantasy that blends reincarnation tropes with urban nightlife. The main conflict arises from the hero applying his legendary discipline and power to rescue women who have fallen under the sway of evil influences in the pleasure district. The narrative appears to follow a formula where the hero encounters various women in peril, using his abilities to defeat the threats they face and guide them to safety.

Notable narrative arcs are structured around the hero’s interactions with these wandering women, each likely presenting a unique case or threat tied to the vice-ridden city. The story is serialized in the seinen manga magazine Young Dragon Age, with the first compiled volume released on August 8, 2025. The manga is written by Kujira and illustrated by Masayasu Fukushima.