Issei, the king of curses

After the intense Thrihexia battle, Issei Hyoudou, the once-celebrated pawn of the Gremory clan and the hero who fought for peace, finds himself cast aside by those he fought to protect. Betrayed by every being in the supernatural world, his sacred gear, the Boosted Gear, is seized and given to his brother, who is hailed as the new hope. Draig, the Red Dragon Emperor, finally feels relief, free from Issei's perceived weakness.

As the world turns its back, Issei awakens to a past shrouded in pain and neglect. He remembers his childhood, tormented by his family's disdain, bullied and ridiculed in school for his perceived uselessness, and shunned by the supernatural community for being a "pervert" and "weakling." Yet, deep within him, a power older than his time stirs-Sukuna, the King of Curses, reincarnated into his very being, seeking revenge.

Fueled by memories of betrayal and the burning desire to prove his worth, Issei embraces his new identity. Alongside his loyal harem. Issei becomes a formidable force of vengeance and power. No longer the hero, he will become the villain the world fears, reclaiming what was stolen and reshaping fate to make them all pay.