Unknown, Japan, timeline [REDACTED]

It was all over the news, all over the screens, in the air, on the faces of those around you, the sobbing of the world that surrounds you.

No one dared move, like they thought time would start the second anyone did. And because of this, no one noticed the single little boy who ran past the crowds.

Past the adults, past the caution tape and even the police line. Until he got what he wanted, the truth.

All Might was dead. All for One, with him.

When time resumed, The symbol of peace stayed on his knees, forever peering down onto the cold body of his nemesis.

One of the pro heroes at the scene, old and small, noticed the boy, took him into his arms and faced him away.

Gran Torino: Toshinori…

Endeavor: "No...not like this. I never got the chance to.."

Soon all the pro heroes who went to help, the students at home watching, and eventually all of Japan began to mourn.

Falling alongside the symbol of evil, All Might passed from the earth, leaving a much weakened hero society behind.

Unfortunately, this unhappy occasion was merely a foreshadowing of the horrible tragedies that were still to come. Only one month later, on an island 9 miles off shore of Musufatu, a dreadful duo launched an attack! Coming to the defence of the inhabitants were japan's top heroes.

Edgeshot was the first to try, and the first to die.

Endeavor was next to fall.

Then Best Jeanist.

And Kamui!

Even Hawks was destroyed by the ruthless duo!

Two artificial beings with strength beyond normal conception have appeared out of nowhere! It's the beginning of a new era for the earth. An era, of darkness.

However that boy, that boy had something inside him not even he knew. And at the age of 6, he became the world's greatest hero. No one will know him. No one will remember him. He'll live on forever oblivious to the deed he did. For he made the story I am about to tell you possible.

A/N: Well here it is, my largest project that's been in the works for so long. It's not exactly pre written but I have most events planned way ahead, so sorry if anyone wants large plot changes. This fanfic is going to include such a massive amount of different characters that I will be using named speakers and thinkers for every scene, as so:

Speaker 1: "bla bla bla"

*event happens*

Inner thoughts

Speaker 2: "dialogue 2"

Whenever a new speaker or thinker comes in, they will be shown. It makes things easier in scenes with 3+ characters all talking. Otherwise it's a pain to read. Also because of the large amount of characters and diverging plots, don't expect a close knit story where each character gets many chapters to develop. There's gonna be plenty of time for everyone to get at least a little shine, with certain characters more than others. Oh and if you think the massive amount of new characters are all oc's, well...you'll be surprised what I got in store (crossover heavy is a massive massiveunderstatement so yeah fair warning.) Any oc will be described visually so you'll get an idea how they look. Non oc's and crossover characters well, I only brought popular ones so just search them up if you really don't know them. Oh and if you want to be included somehow, drop your oc in the comments. It's not like they'll be made into a main character but there is tons of room for at least cameos and other things. Just don't get mad when your sole purpose is to be fodder to hype up a new antagonist.

Now with all that out of the way, I hope you enjoy!