Interuniversal (HxHxMHA Crossover) Killugon

Chapter 1: Arrival

Thunder rumbles overhead. Two boys, injured and dying, crawl toward one another. The fight in the background is almost muted as they hear nothing but their frantic heartbeats. Seconds feel like hours as they drag themselves across the ground. Finally reaching one another, they prop themselves up against a collapsed wall and grasp the other's hand, intertwining the appendages lazily dragging against the ground behind them. They're both growing numb, and they know the end is near, so as the two feel their consciousnesses fade, they use the last of their energy to turn their heads toward one another. They don't notice the camera trained on them, nor do they hear the anguished screams of their classmates. All they see, and all they hear, is one another and their weakening heartbeats. And so, with people—be they family or guardians, heroes or villains—fighting all around them, two boys close their eyes with lazy smiles on their faces and take their last breath.

The entire world watches, be it through the television or in person, as their lives fade away.

The entire world watches as their hearts stop beating.

The entire world watches as their chests stop rising.

The entire world is gripped with emotions as the boys perish on the cold ground, accompanied only by each other.

Because the entire world realizes that this is real. This isn't just a bad dream you would wake up from.

But the fighting goes on.

A brother only in blood fights against the killer of the family's heir. He had attacked the other boy—his brother's friend and his opponent's treasured 'fruit'—as soon as his own was struck down. An eye for an eye, in a sense. Now both are dead, and the fight goes on.

A hero fights against his archnemesis, ferocity and anger in his every blow. Anger at himself, as well as his enemy, for allowing two boys to die. The anger fuels his strength, but it also makes him careless. His enemy slips past his guard and lands a blow to a wound never healed. The cameras are trained on him as he falters, forced back by his nemesis and unable to get his guard back up as he is hammered with punch after slash after kick. He stumbles, his body seemingly deflating in front of the entire world to reveal his weakened form.

His head is bowed as his greatest enemy gloats about the reveal, accepting his impending doom.

Lightning flashes in the sky.

His opponent goes in for the final blow.

Thunder rumbles overhead.

And the world explodes in a flash of light.

~~~~Flashback~~~~

A dark figure could barely be seen jumping across the gap between 2 rooftops, travelling along unperturbed. They were constantly aware of their surroundings, having learned from experience what can happen when one doesn't pay attention shortly after they started partaking in this... activity at 10 years old.

A shout rippling through the night tore them out of their thoughts, their body quickly turning to run towards its source. Another scream, this one tainted with pain, was enough cause for them to break into a sprint, jumping across rooftops and occasionally firing a mechanical grappling gun to gain height and swing across larger streets.