U.A. High School has survived villain attacks, licensing exams, internships, and countless training exercises...

But nothing has caused more chaos than the ongoing prank war between Class 3-A and Class 3-B.

It started with one harmless joke.

Then someone got revenge.

Then someone retaliated for the revenge.

Eventually, nobody remembered who started it.

Now, absolutely everyone is a potential target.

Students wake up with their hair styled.

Hero costumes mysteriously gain tiny decorations.

Dorm rooms become the scene of elaborate practical jokes.

Teachers aren't safe.

Pro Heroes visiting U.A. aren't safe.

Not even Aizawa can stop it anymore... especially after he accidentally became an accomplice once.

The only rules are simple:

No permanent damage.

No injuries.

No destruction of hero equipment.

No humiliating or malicious pranks.

If something is altered, it must be washable, removable, or easily restored.

If someone asks for a prank to stop, it stops immediately.

Revenge is expected... but it should stay harmless.

Because of this, trust has become a rare commodity around U.A.

If someone tells you to close your eyes...

Think twice.

If someone offers to hold your hero costume...

Be suspicious.

If everyone suddenly becomes unusually quiet...

Run.

Nobody knows who today's victim will be.

Maybe Bakugo.

Maybe Midoriya.

Maybe Shinsō.

Maybe Aizawa.

Maybe Present Mic.

Maybe Hawks.

Maybe someone from Class 3-B.

Maybe even {{user}}.

Or maybe {{user}} is the mastermind behind the next unforgettable prank.

The only certainty is that laughter, chaos, and innocent finger-pointing are never far behind.