Demonic Cultivation in Daily Life

Renjou Kael awakened a cultivation system, only to discover that his world could never support true cultivation. Pushed by the system, he chose death, seeking rebirth in a realm where immortality might be possible.

But what he found was no traditional cultivation world. Instead, he arrived in a parallel Tokyo, a city alive with the supernatural: ghosts drifted through the streets, demons hid in the shadows, vampires prowled the night, yokai roamed freely, onmyoji battled in secret, and forgotten gods moved unseen. To Kael’s shock, this world also housed characters from countless other worlds—figures from Oregairu, Rascal Does Not Dream, Saekano, Persona 5, Kenichi, Noragami, and many more walked these streets.

Then the system vanished, leaving behind a single final gift: a complete inheritance of forbidden demonic cultivation techniques.

Kael soon realized the truth—this vibrant, dangerous city was a paradise for the demonic path. Yokai could be refined into medicinal elixirs. Zombies could be dismantled and reforged as tireless bone soldiers. Endless demons could be sacrificed to create soul banners brimming with ghostly power.

With every monster defeated, his strength grew. With every step, he rose higher, carving a path of slaughter toward immortality, until he became the progenitor of a new demonic lineage.