Zero to God: SSS Gravity Overlord

Lucas Mercer, lowly cleaner saving his dying sister, rated Level-0 at awakening. Heir Marcus seizes his compensation, crushes his sister's medicine. The device crashed from Lucas's SSS Annihilation. As Titan, he fights underground, draws Elena. Before the final battle, a moment sparks love. At the championship, Lucas unleashes his Ninefold Black Hole Domain, crushing Marcus, shattering the class barrier forever.