(3rd Person POV)
(Location: Might Tower, Minato District Tokyo Japan)
We see two men in an office-like room, one is a muscular blue-eyed blonde man with a height of 220 cm, who seems to have a serious yet urging expression. This man is Toshinori Yagi, more well-known as All Might.
The second man is wearing yellow framed glasses and has a slimmer build with dark green hair with three yellow streaks in it, his eyes a shade of yellow matching the frames of his glasses. This 200 cm man is Mirai Sasaki, better known as Sir Nighteye the sidekick to All Might. Currently, the two are discussing a serious matter that involves a certain villain.
Toshinori: Please Mirai, I need to know if I'll be able to finally find and stop All For One
Mirai: *sigh* Fine, but what makes you think that this time will be any different from the other times we've checked in the last couple of months?
Toshinori: I don't know how to explain it properly, but tonight feels different, almost like the air itself has become more tense it makes me worry that something big is going to happen
Mirai: While I don't think it will change from the last time, I will at least use my quirk to check just to put your worries to rest
Toshinori can't help but smile at his companion for going through with his request, even though he knew that Mirai feared seeing someone's death. But he was confident that he wouldn't die in the next hour. Mirai places his hand on Toshinori's arm and looks into his eyes to activate his quirk Foresight.
This quirk allows him to see into an individual's future for one hour in the third person as long as he touches them and looks them in their eyes, but his quirk does come with its drawbacks. For one it has a 24-hour cooldown period before it can be used again, the other drawback is that it can also cause him to witness someone's death if they are meant to soon die.
For the past couple of months, he has been trying to see if All Might defeat All For One anytime soon. So far he hasn't seen anything that noteworthy involving a battle between All Might and All For One.
But just like Toshinori thought tonight what he saw was different from the other times he used his quirk on the Symbol of Peace, and it left him completely baffled. He saw a destroyed city that looked like a warzone, and in the middle of it were three people only one of which he recognized.
The first being All Might, who looked to have been hurt from the battle he was currently in, the second was an ash-blonde girl with red eyes and her hair tied up into two buns. This girl looked to be no older than sixteen, but she was fighting alongside All Might with blood-red gauntlets and red lighting covering her body, and she seemed to be just as hurt as All Might.
Finally, the one they were fighting against was a tall man wearing a strange black mask and a suit, but when the battle started up again Mirai could instantly figure out who this man was, due to the man using multiple quirks at once.
That man with the strange mask was All For One and he didn't look much better than the other two he was fighting against. The entire situation was what shocked Mirai, but what left him speechless was doing in the battle. Somehow this girl, whom he had never seen in all his other visions, used multiple quirks, just like All For One.
Specifically from what he could see she used a lighting quirk, a blood control quirk to heal herself and All Might, and some sort of barrier quirk. Which she used to keep All For One from hitting All Might in vital spots, as well as using it to protect any nearby civilians from getting hit by any shockwaves that All For One sent at them.
Mirai couldn't understand how suddenly he was seeing something completely different from all the times he used his quirk these last couple of months. Especially since this girl, who was helping All Might fight All For One, wasn't in any of his other visions but she was capable of keeping up with both of them.
The fact she had multiple quirks was just icing on the shocking cake because he thought that someone having multiple quirks, especially ones that were so different from each other, could only be done by All For One giving them said quirks. So seeing this girl who could've been an ally or a minion of the villain fighting against him with All Might was a sight to behold.
Toshinori: Mirai, what is it, please tell me!
Toshinori was getting increasingly worried, especially since Mirai hadn't spoken a single word for more than half an hour. His shocked expression which looked like he had seen the impossible wasn't doing any favors to Toshinori's nerves either.
Mirai: C-call Nezu he needs to hear about this, this could change everything
Mirai finally said after digesting the information of the war-like battle that he had seen.