Mommy,Daddy is the Galactic Sovereign

Seven years ago, Princess Sera of the Astral Empire was ambushed by the Zergon. The Galactic Sovereign saved her, and the two shared a moment of romance in the sky. A unique mark was left on Sera's palm. Seven years later, with her empire on the verge of collapse, she publicly holds the "Strongest Mate in the Galaxy" trial. Disguised as a wanderer, the Galactic Sovereign reappears with a little girl in tow, "coasting on ridiculously good luck" all the way to victory and marrying into the family. Everyone mocks him as a space drifter—until the Galactic Sovereign Summit, where he summons the Star-Beast, revealing himself as the long-vanished, awe-inspiring ruler of the entire galaxy—the Galactic Sovereign.