A possible concise summary is:
- A boy named Deku, who has no superpowers or Quirk, idolizes the hero All Might and wants to be like him.
- He gets attacked by a sludge villain who escapes from All Might and tries to possess him.
- All Might saves him and tells him he can't be a hero without a Quirk.
- Later, the same villain kidnaps Deku's childhood bully, Bakugo, and Deku runs to help him despite the danger.
- All Might sees his courage and decides to make him his successor, telling him he can become a hero.
Here are the key facts extracted from the text:
1. Izuku Midoriya, also known as Deku, is a young boy who idolizes the hero All Might.
2. Deku does not have a Quirk, a special power that most people possess.
3. Deku's mother, Inko, is worried about his lack of Quirk and his desire to become a hero.
4. Deku's class is given a career aptitude test that suggests they become carnies.
5. Deku's friend Katsuki Bakugo, also known as Kacchan, is a skilled fighter with a powerful Quirk.
6. Deku is inspired by All Might's heroism and wants to become a hero like him.
7. Deku is discouraged by All Might's initial dismissal of his dreams, but later finds hope when All Might offers to train him.
8. All Might is a legendary hero who has been injured and is no longer as powerful as he once was.
9. Deku and Kacchan have a complicated friendship, with Kacchan often bullying Deku.
10. A villain named Sludge attacks the city, and Deku and Kacchan are caught up in the battle.
11. All Might arrives and saves the day, but not before Deku has a chance to show his bravery.
12. All Might offers to train Deku to become a hero, despite his lack of Quirk.
13. Deku is overjoyed at the prospect of training with All Might and becoming a hero.
Note that some of these facts are presented in a humorous or exaggerated way, but they are still key points in the story.