[Western Crossover] Tiamat Is Everyone's Mom

It's time for daddy issues to become mommy issues! (Just kidding.)

Tiamat hated humanity, but she also loved humanity deeply. Humanity's evil was humanity's love. It was because she loved them that she could hate them, and because she loved them that she turned her gaze upon them. Beasts were complicated and contradictory things like that.

She had slept in the Imaginary Sea for who knew how many tens of thousands of years, always waiting for a chance to return to Earth.

She had a dream. In it, a human lived through the entire span of his life, from birth to death. She saw that the child was always yearning for love, trying to change the place where he lived, just as she had always hoped to change Earth's ecosystem.

Tiamat jolted awake. Heroic Spirits did not dream. Usually, dreams were warnings or premonitions.

Then, one day, a tiny crack opened in the endless, lightless Imaginary World. It was so small compared to her 74 million square kilometers that it could almost be ignored. But she stared at that little crack as if she had seen something impossible. From the other side came a breeze from Earth, one she could never mistake for anything else.

While investigating a white powder trade, Jason accidentally busted a cult hideout. Just as he thought this was another brainwashing group with nothing to its name, the woman being used as a sacrifice suddenly raised her head and viciously stabbed at him. The ordinary blade slid into his stomach as easily as a knife through tofu. Blood gushed out like a fountain, staining the ground red.

The blood flowed across the strange magic circle on the ground. In an instant, the circle shone with blinding white light. A girl with pale blue hair and a white dress emerged from the light. Her figure was slender and frail, but a pair of thick, curling horns grew from her head, making her look just like a demon from legend.

"...Who are you?" Jason asked with difficulty, clutching his wound as blood continued to pour out. He didn't realize that from the moment the girl appeared, everyone else had passed out. He was the only one still standing there, staring directly at her.

"I'm Mommy!"

Jason: ?

Jason: Do all of you have some habit of randomly becoming someone's parent?

Batman was fighting Red Hood as usual when a beautiful girl suddenly appeared in front of Red Hood. She spread her arms wide like a mother hen protecting her chick, her pale pink cross-shaped eyes glaring at him as if she were unhappy.

"See? You really can't manage without me." The girl spoke with a hint of smugness, but this time she was talking to Red Hood.

"W-wait, why did you come out without your mask?" Red Hood shouted in a panic. He grabbed the girl and tried to pull her behind him.

The girl didn't budge, as if she hadn't been grabbed by a six-foot-tall grown man at all. Looking a little hurt, she made a face like she was about to cry. "...Is Mommy's face ugly?"

"No, no. Good grief, why did you follow me?" Red Hood covered his head in exasperation, or rather, his helmet, as he tried to change the subject.

"Lunchbox. You forgot to bring it!" The girl raised the enormous lunchbox in her hands, her face practically shouting, "I'm amazing, right? Hurry up and praise me!"

Red Hood sighed again and took it helplessly. "All right, thank you... Mommy..."

Batman, who had been ignored for a long time, stood to the side: ?

Still the same pitch-black bat: Wait, Mommy? This girl? Is this some kind of kink, or is Red Hood a three-year-old baby?

PS: There is a lot of introspection at the beginning. If it feels slow, feel free to skip around. I'll make improvements based on everyone's feedback, so please don't give up on me, I beg you! (Heart)

Theme: Humanity's evil is humanity's love