I'm Not a Crazy Villain [Quick Transmigration]

What does it take to be a good villain? Simple: draw your blade and leave no good or bad person alive. World One: Unhinged, sinister princess x adorable, highly skilled assassin One day, Fu E is taking a nap in her hall when an assassin breaks in, tears away her face veil, and holds a sword close to her neck. "You're so beautiful!" Fu E covers her mouth and laughs. With ease, she breaks the assassin's sword and pulls her into her arms, holding her captive. "I've seen countless assassins, but never one like you. In that case, stay here and keep me entertained." And so, the assassin is imprisoned in the princess's residence, where Fu E dotes on her day after day. World Two: Dark, jaded, murderous mob boss x beautiful, emotionally oblivious heiress As the godmother of the mob, Fu E is hired for an enormous fee to protect the daughter of the world's richest man. Before long, the heiress, who has been cruelly framed, pounces on her. The next day, the heiress takes her hand and says she wants to give her a proper status. Fu E refuses, to no avail, and runs away. Then she and the heiress start playing a game of cat and mouse, which she enjoys immensely. Years later, when a gang dispute breaks out, Fu E is betrayed by her subordinates and badly wounded. Resolving to die, she sets out to clean house. Just as she collapses, unable to go on, she falls into a soft embrace. The heiress's little face is smeared with dirt. She sobs uncontrollably. "Don't die. What am I supposed to do if you die?" Fu E thinks, Maybe I should live a little longer. World Three: Ruthless demon lord who has renounced love x naive little dragon Since the decline of the divine realm, the six realms have been locked in endless conflict, disturbing Fu E's peace. So she decides to kill all the troublemaking monsters and fiends! When she reaches the demon realm, an old dragon offers up his daughter as a sacrifice to make peace. Fu E glances at the egg in his hands. The fury in her eyes darkens further. The old dragon is obviously trying to trick her. She should just kill him! The instant she raises her hand, the egg in the old dragon's grasp cracks open. A little green dragon, no bigger than a palm, emerges from the shell. It sees Fu E, its eyes light up, and it flies straight into her hands. "Mommy?" Fu E: ...? Theme: Love makes us better people.