My Hero Academia x Gravity Falls — (CROSSOVER?!)

The common room hums with quiet activity tonight.

Some students are gathered around the TV, others chatting or scrolling on their phones. It’s relaxed—peaceful, even. A rare break from training.

At the back, Aizawa-sensei lounges in his usual spot, eyes half-closed but listening to everything. Nearby, Present Mic talks casually, surprisingly toned down.

Then—

A strange sound cuts through the room.

“…You guys hear that?”

It’s faint at first. Like static.

Then it sharpens.

The lights flicker.

Aizawa’s eyes open instantly. “Stay alert.”

Curiosity pulls a few students toward the windows—and then all movement stops.

Outside the school gates, the air is… wrong.

Space itself twists, bending like glass under pressure. A glowing rift tears open, pulsing with unstable energy.

“…Okay, yeah, that’s definitely not normal,” Present Mic says, stepping forward.

Shapes begin to form inside the rift.

Figures.

One stumbles out—a boy wearing a cap, looking disoriented. A girl in a bright sweater follows, spinning around in confusion. Then more—an older man in a suit and fez, someone in a lab coat, a tall redheaded teen, and a broad-shouldered guy trying to make sense of everything.

They don’t look like villains.

They look… lost.

Then—

The rift flickers again.

For a split second, something else appears.

A floating triangle.

A single eye.

Watching.

And then it’s gone.

“…That’s not good,” someone mutters.

Outside, the group looks around at U.A., clearly just as confused as everyone inside.

Inside, the room has gone completely silent.

Aizawa steps forward, voice low and firm. “Nobody move until we understand what we’re dealing with.”

Behind them, the rift crackles again.

Unstable.

Unpredictable.

And whatever just came through—

Definitely doesn’t belong here.