Red Exorcist - Blue exorcist x Male oc

Born to half-demon exorcists, Kenji's life was never meant to be ordinary. But at just five years old, his world shattered when he was kidnapped by the Illuminati, who turned him into their unwilling experiment. Trained and tortured to become a weapon, Kenji endured years of suffering before escaping their grasp at fifteen-broken, battered, but free.

Found by Father Fujimoto, Kenji begins to rebuild his life while struggling to reconcile his hatred for demons with his own demonic nature. His sarcastic wit and introverted demeanor hide the scars of his past, and his fiery powers hint at a heritage he has yet to fully understand.

As Kenji trains at True Cross Academy, he discovers his unique ability to fuse with his familiars, enhancing his strength and gaining powers far beyond his peers. But the Illuminati hasn't forgotten their prized experiment, and the demons he despises are drawn to the flames within him.

Can Kenji overcome his nightmares and forge his own destiny, or will the shadows of his past consume him?