Saikyou Kurasu [Shadow Nekuromansa] Ni Kakusei Shita Moto Dorei Wa, Kono Fuhai Shita Sekai Ni Fukus

Sid Ranols was treated like dirt. Bound as a slave to the Hero’s party, he possessed the reviled ability of a [Necromancer]. He endured their cruelty with a single beacon of hope keeping him sane: the promise of finding his long-lost sister, Iris. But when the party cut him loose as bait in an S-Rank dungeon, he learned the horrific truth. His sister was never coming back. She had already been butchered—a mere plaything for the "Hero" Sylvan's twisted pleasure. "I will have... my revenge!!" Fueled by an inferno of hatred, Sid discovers the corpse of the legendary Vampire Princess, Ecarlate. Upon [Resurrecting] her, he awakens to the ultimate power: the [Shadow Necromancer]! A boy with nothing left to lose declares war on the Hero and the world that sanctioned his suffering. The curtain rises on this dark fantasy of absolute vengeance!

Original Manga

Web Novel (Completed)