SSS Transmigration: I Can Extract And Evolve Overpowered Shadows

Nishikawa Hinata's class was summoned as heroes to fight a demon king, but he never made it. Kidnapped by Shadow God cultists and sacrificed to awaken a dead god, Hinata did the impossible: he slew the cultists and obtained something that would change his life forever: the “Shadow God System,” a system with one singular obsession—turning him into a god. Now, wielding shadows that grow stronger with every kill, Hinata must survive this brutal world… and find a way back home.