Hero Invincibility System

The heroic and invincible world Azera was invaded by hell demons. At a critical moment, the legendary mage Deken used the "Gate to Another Dimension" magic to bring back the demon king Sellon and a group of creatures from the magical world. The souls of these creatures came to the earth through different dimensions, possessing people around the world and becoming people with supernatural powers. Deken possesses the protagonist and transforms into a system to guide the protagonist's growth. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.