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The Return of the Heavenly Demon!I promised myself to live ordinarily for the rest of my life…….“Please be my father until I graduate.”He suddenly gained a daughter out of nowhere. Adapted to Manhwa Adopted Children Age Regression Appearance Different from Actual Age Beast Companions Calm Protagonist Cheats Complex Family Relationships Dragons Dungeons Familial Love Family Gate to Another World Hard-Working Protagonist Hidden Abilities Hiding True Abilities Hiding True Identity Hunters Level System Low-key Protagonist Magic Magic Beasts Magic Formations Magical Technology Male Protagonist Martial Spirits Modern Day Monsters Overpowered Protagonist Proactive Protagonist Protagonist Strong from the Start Returning from Another World Secret Identity Sword And Magic Sword Wielder Transported to Another World