yemihikari
Aizawa Shota, the Pro Hero called Eraserhead, discovers a message from his future self telling him he's the only one who can stop something, to change things. And as a Pro Hero, his job is to save people when he can.
Disclaimer - I don't own My Hero Academia. This is written for ONC, prompt Number 66 as mu main, "A strange message arrives, written in your own handwriting, but it's dated years in the future. As you read, you realize it warns you about something only you can change." I'm also using parts of prompt 111, "With a single touch, you can slip into someone else's memories. But when a stranger shows you a future crime involving you, you must uncover the truth before it comes to pass."