Never

0. Butterfly effect

          Somewhere in Japan, a butterfly landed on a potted flower. A kitten tried to catch it, and the pot fell from the window. A child who was passing under instinctively used his quirk, encasing the pot in a flexible, solid bubble. The bubble bounced to the road, and almost hit a biker. The biker avoided it, but his brusque mouvement brought him face to face with a car. The biker avoided it too, but crashed into a streetlamp, flew to a wall and lost consciousness. As for the car, it braked and swerved, in the direction of a pedestrian crossing.

          A woman was crossing, carrying two heavy bags of supplies. She had long dark red hair, beautiful blue eyes, and a slender body, powerful and graceful. Without the bags she would have probably been able to avoid the car. As it was, she didn't have the time. But juste as the car was about to hit her, she disappeared in a wind blow. The driver reclaimed control of their vehicle and continued on their way, without trying to understand.

          Above the road, rising quickly, was a man, blond, really tall and impossibly muscular, carrying the woman and her bags in his arms. He had a colorful costume, adorned with a cape, and wore an unalterable smile.

The hero : Are you alright miss ?

The woman : All Might ?!

All Might : I am here !

          While they were falling, the woman stared at the symbole of peace, the best hero of Japan, and probably of the whole world... and giggled. He landed, cracking the sidewalk but making sure to not shake the woman too much, and looked at her, a bit surprised. It wasn't quite the kind of reaction that he was used to.

All Might : Miss ?

The Woman : Sorry, thank you for saving me.

All Might : You're welcome, it's only natural. But if you allow me, what is making you laugh that way ?

The woman : Euhm... it's just... that your hair remind me a bit of the hairstyle of a cockatoo that my sister had long ago.

All Might : A cockatoo ?!

The woman : That or big ears, like a bunny.

          And she started to giggle, trying and failing to stop her laugh, while the hero was looking at here, speechless. Then she remembered a detail and calmed down instantly, looking everywhere around her.

All Might : Is there a problem miss ?

The woman : There was a biker... he seemed hurt... but he isn't here and neither is his bike, so I suppose that it wasn't that severe, that or he had a healing quirk.

          All Might went to look, but only found a twisted streetlamp and a bit of blood on the wall. To be sure, he quickly looked around the neighborhood but found no trace of the man. He came back to the woman to reassured her, then offered to help her with her bags. And from one thing to another they came to exchange their number. Five month later they got married, and got really annoyed by the media after.

*

*              *

          Three years later the biker, also know as Professor Shinso, was arrested.

          The day of the accident, the prominent professor in research on mentalist quirks really hurt his head. He had quickly awoken and came back home with a headache, but after a few stitches and a day of rest forcefully implemented by his wife, everything seemed back to normal.

          Except for the fact that the good Professor Shinso started to lose his mind. His interest in mentalist quirks became a real obsession, and took quite an unhealthy turn. He himself had a quirk that allowed him to control one person, if they answered directly to one of his questions. But that was so few, so limited... so he tried to manipulate others without a quirk, with only his words. He studied other manipulation quirks ( among other quirks ) and slowly became so charismatic and convincing that it was impossible to make the difference between his quirk and his skills. He manipulated Reds, convincing them to commit diverse crimes, only to see to what extend he could bypass their morals, then Oranges, then Yellows, then any color. The true success was when he became able to control Purples, even though most were smarter or able to hear his thoughts. And one day, having reached the peak of his art, he asked to all of his students to commit suicide. He was arrested, but the students having drunk the poison willingly, the trial dragged on.

          His victims were accused of crimes, and defended themselves by arguing that they had been brainwashed by his quirk. The good professor having published his studies, the public simply deduced that these people had chosen to commit these crimes, and of course if they had been so « easily » manipulated it was because crime and violence were part of them.

          The people with this kind of quirks didn't take it well, and the tensions rose. Discriminations intensified everywhere, until one day a group of thugs attacked a gigantic shopping center.

*

*             *

          Two families were at the center this day. A woman with dark green hair and emerald eyes, holding the hand of a boy around three, with black hair with green strands and the same eyes as his mother. He was speaking with animation with an other boy of the same age, who had red eyes and blond messy hair and was holding the hand of a woman looking just like him, who was laughing with her friend, with her husband by her side.

          Everything was great, until the ground started to shake, and screams started to resound from everywhere. The group stopped, surprised, then frightened, and saw a giant demolishing the buildings while other villains were destroying everything around them, killing those who weren't fast enough to escape, and the heroes too weak to stop them.

          The group ran. All of them except the greenette, who ran to a girl stuck under some debris that he tried to lift, but to no avail. His mother instantly noticed and went back to him, but he refused to abandon the girl and the mother, having a big heart too, tried to help. Their friends came back, and with their help they managed to save the girl, who thanked them, before screaming. They looked up. The sky fell on them.

          A dozen of minutes later, the two boys were alone, trapped in a tiny cave made by debris, covered in scratches and struggling to breath, crying silently.

Greenette : Katchan - sob - are you alright - sob ?

Katchan : Great ! And you ?

Greenette : I - sob - I can't feel my legs !

Katchan : It's... it's nothing, it's just because we're a bit crushed ! When we'll get out you'll have pins and needles in your legs for a moment then everything will be fine !

Greenette : Katchan, do you think mom and auntie and uncle are alright ?

Katchan : Of course they're alright ! They are probably stuck somewhere else, that's all. The heroes will come, you'll see.

Greenette : But the vilains killed the heroes...

Katchan : Pff, they were shitty heroes, All Might will come and beat their asses in no time, then he will get us out, and we will be able to ask him to train us to become heroes too !

Greenette : But Katchan, we don't have our quirks yet.

Katchan : I don't care, I'll become the best - cough cough.

Greenette : Katchan !

Katchan : It's nothing Izuku. It's - cough.

Izuku : Hold on Katchan, All Might will come.

          All Might was celebrating his marriage anniversary. He didn't came.

*

*             *

          This event had many repercussions.

          Professor Shinso was sent to Tartarus, the best protected prison of Japan, and people became more distrustful toward mentalist quirks, which use became more regulated.

          The colorful armband system was instigated, in order to recognize mentalists, but also people who were naturally dangerous because of their quirk. Ironically the « sorting » was made with the criteria  defined by professor Shinso when he was making his « studies » about manipulating people. Discriminations already existed before, since it's apparently an inherent part of human nature, but it worsened because 1 : it was now kind of legal in certain cases, like how the « Fires / Flames » were forbidden to have certain jobs, and 2 : everyone had their status around their arm, which make splendid target for quirkish people.

          As for the kids...