Fics like System Overload: Radiostatic

In the depths of Hell, where secrets are currency and rivalry rules, Alastor and Vox hide an astonishing truth: they are not just enemies but secretly lovers. Until Alastor became pregnant with Vox's kid. He wanted to share the news with Vox, but he overheard Vox and Valentino, believing that Vox had chosen the moth over him. Alastor spent the last seven years raising his daughter, Vinciane or Fawne, as he likes to call her. She never knew that Vox was her father, and Vox didn't know that she existed. Now here he was, with his daughter in the princess's hotel. Oh, this will be fun.

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