Season 1

1.Little Brother Hibito and Big Brother Mutta

2.My Shining Star

3.The Man with the Advantage and the Running Female Doctor

4.Next to Hibito

5.Days of Missing

6.Et Cetera in My Head

7.Dear Hibito

8.Smoky Heaven

9.Individual Resolve

10.Running Bus

11.Trapped Rivals

12.My Name Is Itou Serika

13.3-D Ant

14.Broken Glasses and the Sole of the Foot

15.Let's Talk About Space

16.Alarm, but No Clock

17.The Culprit Is in the Room

18.Roo-ra! Kenji!

19.The Day Before Goodbye

20.The Worst Possible Punishment

21.A Long-Awaited Glimpse of the Sky

22.Working on the Dream

23.Father, Son, and Mutta Claus

24.The Worst Possible Interviewer

25.Sonic Little Brother Training Big Brother

26.Painful Interview

27.One Question

28.Miracle of Doha

29.Night Before Launch

30.Dog, Old Man, and Alexander

31.Rocket Road

32.A Private Place

33.Moon Rabbit

34.Pug and Hug on a Moonlit Night

35.From the Little Corner of a Big Facility

36.Dancing Astronaut

37.Two Men in the Park

38.Eleventh E-mail

39.Lunar Illusions

40.Heaven and Hell

41.Eighty Minutes to Live

42.Hibito's Choice

43.Brian

44.Three Astronauts

45.Five Blue Rangers

46.Number One Restless Guy

47.The First Promise

48.Always Have a Pedometer in Your Heart

49.Nitta the Leader

50.Nitta and Mutta

51.Living Stone