BLACK HEART: The Glitched Shadow Between Dimensions

I was never meant to exist in this world.

Not in My Hero Academia. Not in Solo Leveling. Not anywhere.

They call me Black Heart. An anomaly. A glitch.

I walk the world of heroes where quirks define power, and yet... I possess none.

Because what I have is beyond that. It is corrupted, forbidden, fractured across realities.

I was meant to die. But instead, I opened a door.

Now I stand between dimensions-hidden, watching, evolving.

In one world, they see a quirkless outcast.
In another, they fear the thing that kills monarchs in the shadows.

But no one knows the truth:

I AM BOTH. I AM THE ERROR.

And the real story hasn't even started yet...