Specials (2020)

1. Catarina's Brain Conference 1

2. Catarina's Brain Conference 2

3. Catarina's Brain Conference 3

4. Catarina's Brain Conference 4

5. Catarina's Brain Conference 5

6. Catarina's Brain Conference 6

7. Catarina's Brain Conference 7

8. Catarina's Brain Conference 8

9. Catarina's Brain Conference 9

10. Catarina's Brain Conference 10

11. Catarina's Brain Conference 11

12. Catarina's Brain Conference 12

13. Catarina's Brain Conference 13

14. Catarina's Brain Conference 14

15. Voice Drama #1: Geordo

Companion to the anime, a short retelling of the first episode from Geordo's perspective.

16. Catarina's Brain Conference 15

17. Catarina's Brain Conference 16

18. Catarina's Brain Conference 17

19. Catarina's Brain Conference 18

20. Voice Drama #2: Keith

Companion to the anime, a short retelling of the first episode from Keith's perspective.

21. Voice Drama #3: Mary

Companion to the anime, a short retelling of the second episode from Mary's perspective.

22. Catarina's Brain Conference 19

23. Catarina's Brain Conference 20

24. Voice Drama #4: Alan

Companion to the anime, a short retelling of the second episode from Alan's perspective.

25. Voice Drama #5: Sophia

Companion to the anime, a short retelling of the third episode from Sophia's perspective.

26. Voice Drama #6: Nicol

Companion to the anime, a short retelling of the third episode from Nicol's perspective.

27. Looking Back Voice Drama: Snake

Toy Snake quickly recaps the first 3 episodes.

28. Catarina's Brain Conference 21

29. Catarina's Brain Conference 22

30. Catarina's Brain Conference 23

31. Catarina's Brain Conference 24

32. Catarina's Brain Conference 25

33. Catarina's Brain Conference 26

34. Let's Learn With Katarina 1

35. Let's Learn With Katarina 2

36. Let's Learn With Katarina 3

37. Let's Learn With Katarina 4

38. Let's Learn With Katarina 5

39. Let's Learn With Katarina 6

40. Let's Learn With Katarina 7

41. Let's Learn With Katarina 8

42. Let's Learn With Katarina 9

43. Catarina's Brain Conference X 1

44. Catarina's Brain Conference X 2

45. Catarina's Brain Conference X 3

46. Catarina's Brain Conference X 4

47. Catarina's Brain Conference X 5

48. Catarina's Brain Conference X 6

49. Catarina's Brain Conference X 7

The myths behind some of history's most defining moments and revealing facts behind America's space explorations.

50. Catarina's Brain Conference X 8

51. Catarina's Brain Conference X 9

52. Catarina's Brain Conference X 10

53. Catarina's Brain Conference X 11

54. Catarina's Brain Conference X 12

55. Catarina's Brain Conference X 13

56. Catarina's Brain Conference X 14

57. Catarina's Brain Conference X 15

58. Catarina's Brain Conference X 16

59. Catarina's Brain Conference X 17

60. Catarina's Brain Conference X 18

61. Catarina's Brain Conference X 19

62. Catarina's Brain Conference X 20

63. Catarina's Brain Conference X 21

64. Catarina's Brain Conference X 22

65. Catarina's Brain Conference X 23

66. I Met My Destined One...

The OVA will tell the childhood stories of the main characters, adapting from the first volume of Satoru Yamaguchi's original light novel. Bundled with the seventh limited edition volume of the manga.