Contract of revenge

In a world ruled by Quirks and heroes, Izuku Yagi was never meant to exist.
Born into the legendary Yagi family and hiding in the shadow of his younger twin sister, Izumi, Izuku's life changes forever at the age of nine-when something ancient awakens inside him.
Not a Quirk.
Not a blessing.
But a demon's power, silent, patient, and terrifyingly precise.
For three years, Izuku trains in secrecy, mastering abilities no hero registry could ever explain. To the world, he is just another boy in a society obsessed with powers. To himself, he is something far older... and far more dangerous.
Everything shatters the night a desperate prayer reaches beyond gods and heroes alike.
A girl, broken by cruelty and loss, whispers her wish into the darkness-forsaking heaven itself for revenge.
Her name is Momo Yaoyorozu.
And Izuku answers.
Summoned from the shadows, his form changes-black hair replacing green, crimson slit eyes glowing with demonic promise. From that moment on, Izuku walks a razor-thin line between servant and savior, monster and protector.
As heroes rise, villains fall, and secrets threaten to surface, one question lingers:
What happens when a demon walks the path of a hero... and begins to care?

Please let me know how you guys like it this will be a Izuku x momo is you can't already tell hope you guys like it 🤗