How did one punch man become strong?

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Tags

1. #result
2. #training
3. #power
4. #loses
5. #becomes
6. #become
7. #source
8. #shonen
9. #punch
10. #intended
11. #powerful
12. #order
13. #codes
14. #stronger
15. #saitama
16. #incredibly
17. #explanation
18. #parody
19. #making
20. #therefore
21. #expect