Were there ninjas in Japan?

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Tags

1. #surprise
2. #covert
3. #following
4. #unification
5. #feudal
6. #tokugawa
7. #espionage
8. #ninja
9. #under
10. #obscurity
11. #japan
12. #faded
13. #functions
14. #shinobi
15. #included
16. #shogunate
17. #deception
18. #agent
19. #mercenary
20. #hiragana
21. #century
22. #attacks