Introduction: In the year 2042, the phenomenon known as the "Eclipse Moon" —a celestial event that plunged the world into a reddish light for seven days— marked the beginning of an era of chaos. After its disappearance, the Abysses emerged: interdimensional portals that release the "Voids," grotesque creatures that devour everything in their path. Humanity, on the brink of extinction, developed the Abyssal Network, a system that channels energy from the Abyssal World to grant supernatural abilities to individuals called Users.Ren Kurogane, a 19-year-old youth, is a Rank 0 User: someone with no aptitude for combat, marked by a defective connection to the Abyssal Network. While high-ranking heroes battle the Voids, he and other outcasts are relegated to the Restoration Squad, a group that rebuilds destroyed cities and collects Voids' corpses. Ren lives with the stigma of being "useless," carrying the trauma of losing his family during the Eclipse Moon, until, during a mission, he discovers he possesses a unique ability. This not only transforms him into the warrior he has always wanted to be but also grants him the possibility of becoming the greatest of all. Yet, every great power comes with sacrifices.Now Ren faces a crossroads: Should he sacrifice his humanity to save the world?Note: I hope you enjoy this story I've written with all my heart. It’s my first story on this platform. I’ll be updating three times a week....