I Died 999999 Times Infinite Level Up with Invulnerability Skills

The strongest hunter guild, "Byakuren", is praised as the world's heroes after defeating the Demon King. However, the truth hidden behind their power is utterly inhumane.Their strength comes from a cruel secretthey imprison two siblings, Makoto and Minori, who are descendants of the undead, repeatedly killing them to forcibly farm experience points.To surviveand to take revengethe siblings make a mad choice: killing each other to level up."Let's beginour revenge."Awakened through their deadly struggle, the two carve a path of vengeance.