A hero of justice [My hero academia x Shirou Emiya]

The broken timeline

Sat on an endless world full of broken swords a young man lays near dead.
"How did I get here?"
"How did my dream to help others end like this?"
"All I wanted was to save another, to help those born with less"

A young woman with black hair and onyx eyes walked towards him preparing to finish the job she started.

"It's so sad it had to end like this my brother, I truly love you and I hope you know that despite this situation."

She stabs a highly futuristic sword straight through his chest causing him to throw up blood everywhere.

"Goodbye my brother, it's truly a shame that it had to be this way, if you had just been a good boy none of this would have happened."

She lifts her sword in the air Shirou's body still piercing straight through Shirou's chest. She swipes it through the air throwing him tens of meters away crashing into the floor.

"But don't worry, I've spent years designing this device. Once it's used you will become completely agreeable to the ideal Shirou. No hero of justice but a house husband who only cares for looking after his wife.
I'm sure artoria would be very happy about that won't she?"

He desperately struggles to get up but realizes that he's not escaping this. He actives his quirk one last time.

Judging the concept of creation
A quirk used to rewind time and set things anew

Hypothesizing the basic structure
A horn made of bone connected to the fabric of time

Duplicating the composition material
Imitating quirk gene, bone carved in a continuous spiral

Imitating the skill of its making
Imitating the concept to quirks itself, an abnormality born from the combination of origin with genetics

Sympathizing with the experience of its growth
A young girl constantly fearful of her own ability's

Reproducing the accumulated years
Years of training not to improve and overpower but to suppress and hide

Excelling every manufacturing process
All steps combined into a single process, a horn forms in his hand

Alteration
Everything around the horn is rapidly absorbed, Turning it into a broken quirk. No longer only targeting one being but rather the entire timeline

"What are you planning to do with a small bone? I know your desperate Shirou but this is pathetic."

She lifts what looks like a large gun with a radar-like shape into the air. A golden light begins to glow out of it.

"Stay still for just a second okay. You will feel good in just a moment."
Shirou doesn't respond rather he pulls Avalon straight out of his chest. And reaches to his head pulling what looks like to be a small sword out of it. But this sword is no normal sword rather it's the collection of his knowledge of swords gained throughout his life. Placing it with Avalon he pro-forms one final gamble.

As the golden light shot out from this evil woman's gun swallows his body and his head goes numb he crushes the horn, causing all of time and space to be unravelled.

"Arigato Momo"

All of his life unravels itself from existence. His continuousness slowly begins to fade as his body has already disappeared forever lost in the sea of time. He finds himself in an emergency room with his parents. His mother just had given birth. Unable to be seen or heard he looks down at his younger self and the sister he will soon grow to despise.
Placing the bright blue sword of his memory's within the boys head and Avalon within his heart. his consciousness finally fading, he has given up his life for even a chance at a better future. Becoming a martyr for himself and his dream. His last thoughts are spent hoping, begging that maybe this life will be different maybe finally he can become.

A hero of justice