Fics like Penumbra

Ultraman made it out of the black hole with only his last orders in mind: Kill Superman. He fails. He gets to know Clark. He gets to know himself. And when Clark really needs to go back to his life, he calls in a trusted friend to help the newly liberated clone find his footing in this world. Bruce Wayne just wants to keep a dangerous and unstable metahuman under control at first, but his guest proves to be surprisingly charming. Tags update as fic goes on, please check before reading.

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