Moonfall (MHA AU ♡ Katsuki Bakugo)

The moon was never dead. Not really. It reflected everything we were too afraid to face-myth, madness, instinct. And when Dr. Ryoji Tsukigawa looked up, he didn't see emptiness. He saw a beginning.

Two days after the Final War, with cities still bleeding and heroes barely standing, the world changed again. Not with a bang-but a hum. A low, wrong vibration. Most people didn't hear it. But every quirked person felt it-like something primal stirred beneath their skin.

They called it Moonfall.

Dr. Tsukigawa-"Doctor Howl," the Feral Messiah-launched the Lunar Quirk Resonance Engine: a hidden satellite network that pulsed through the world and rewrote the quirk genome. Not louder. Wilder. It awakened the beastline buried deep in our DNA.

Quirked individuals collapsed. Convulsed. Shifted. Fur. Fangs. Howls. It wasn't evolution. It was revelation. Everyone with a quirk became a shifter-with new forms, instincts, and needs.

Heat. Rut. Bonding.

The world flipped overnight. Heroes formed packs. Villains turned feral. Suppression clinics and moon shelters sprang up. Nations rewrote laws by moonlight. Dynamics emerged-Alpha, Beta, Omega. Not by choice. By scent. By instinct.

Bakugo became an Alpha in full-snarling power and possessive rage. Denki twitched with Beta scent confusion. Tsuyu? Something entirely new.

Meanwhile, cults like the Moonmarked rose, worshiping the change. Others, like the Pureborn, demanded extermination.

And in the middle? The rest of us. Caught between instinct and identity.

Bonds formed. Nests were built. Mates scented each other like lifelines. Some fought it. Others gave in.

The moon didn't curse us. It reminded us.

The story of Moonfall isn't about power. It's about exposure. You don't just think-you ache. You don't just want-you hunger. Your instincts don't whisper. They roar.

And once they wake... they don't go back to sleep.