Temporada 4

1. Episodio 1

2. Hattori becomes a trainer, again

3. Episodio 3

4. Episodio 4

5. Episodio 5

6. Episodio 6

7. Return of favors

8. Episodio 8

9. Episodio 9

10. Episodio 10

11. An underground hotel?

12. Bamboo Ninja Technique Challenge

13. Episodio 13

14. Jobs for the three

15. Kenichi becomes a Salesman

16. Fighter Shinzo

17. Episodio 17

18. Episodio 18

19. Shinzo's new friends

20. Episodio 20

21. Shishimanu's Training

22. A picture with Celebrity

23. I don't want to be class monitor!

24. Episodio 24

25. Cup & Ball Tournament

26. Episodio 26

27. Ninja Snowball Fight

28. Skiing trip

29. Amara's Challenge to Hattori

30. Shinzo's heavyweight training

31. Beach Café

32. Hattori's thunderous sneezes

33. Cleaning spree

34. Guest's incoming

35. Amara's road to fitness

36. A day out with a celebrity

37. Be Careful!

38. Koike Sirs' Marriage Proposal

39. Hattori is misunderstood

40. A vacation to Hawaii!

41. A visit by Indian Ninja

42. Shishimanu leaves home

43. Keo in danger

44. Mummy's daughter?

45. A cup worth million

46. Shinzo's own room

47. Tyumeko's Piano Performance

48. Detective Mummy

49. Don't Be Scared!

50. A flying squirrel Ninja

51. Invisible Ink's Good luck charm

52. Goodbye, Kenichi