Hiroaki Hirata
Mutta Nanba (voice)
Series
Watch Space Brothers (2012) Online
No video is available for Space Brothers - S1E1 yet. Check back soon.
Synopsis
When they were young, the brothers Mutta and Hibito promised each other they would become astronauts. Now, in 2025, Hibito has followed his dream to become the first Japanese on the moon, but Mutta has just been fired from his job. His brother reminds him of their childhood promise, and Mutta decides once again to aim for space.
Episodes
Season 1
PreviousNext
1. Little Brother Hibito and Big Brother MuttaNow viewing2012-03-3124mThe year 2006. Two brothers, Nanba Mutta (age 12) and Hibito (age 9), happen to spot a UFO headed for the moon. The experience inspires them to make a certain promise.
2. My Shining Star2012-04-0724mWith his mother's assistance and Hibito's encouragement, Mutta has been accepted for the New Astronaut Selection Exam. However, unsure of his next step, he visits Sharon, who works at a nearby observatory. After receiving advice from Sharon, Mutta is finally able to make up his mind.
3. The Man with the Advantage and the Running Female Doctor2012-04-1424mAfter advancing to the second exam, Mutta realizes that the other applicants are much better prepared than he is. Desperate to prove himself, he stakes everything on the lung capacity test, as he has confidence in his trumpet-trained lungs. However, as the other applicants drop out, he finds himself in a heated battle with Itou Serika. Who will come out on top?
4. Next to Hibito2012-04-2124mAfter a long week, only the final interview remains in the second JAXA exam. Mutta is drawing attention as Nanba Hibito's older brother, but he insists he won't spend his entire life as Nanba Hibito's big brother.
5. Days of Missing2012-04-2824mAfter completing the second JAXA exam, Hibito invites Mutta for a free trip to Houston, Texas, through NASA's family support program. Upon arrival, he finds himself chased by a pug named Apo, and is then reunited with Hibito. However, Hibito expresses disappointment.
6. Et Cetera in My Head2012-05-0524mMutta has arrived in America, but he's off to a rocky start with Hibito. Meanwhile, his future as an astronaut is in jeopardy because the headbutt incident has been brought to JAXA's attention.
7. Dear Hibito2012-05-1224mAfter learning that his former boss has told JAXA about the headbutt incident, Mutta has given up hope on passing the exam. To cope, Mutta falls back on his childhood habit of multitasking like crazy when something bad happens.
8. Smoky Heaven2012-05-1924mWhen the robber known as the fire extinguisher man strikes the restaurant where Mutta is, he's in trouble. But once the dust settles, Mutta has become a national hero for capturing the criminal. However, it appears there's more to the story.
9. Individual Resolve2012-05-2624mAfter passing the second JAXA exam, Mutta returns to Japan for the third. He's happy about the exam result, but on the flight back, a nightmare leaves him rattled. This is due to the letters from Hibito that he discovered before leaving.
10. Running Bus2012-06-0224mMutta has learned that Kenji and Serika have strong reasons to become astronauts, while Mutta is simply trying to achieve a childhood dream. This causes Mutta to begin to question himself.
11. Trapped Rivals2012-06-0924mThe third exam will take two weeks. Mutta and the other candidates are transported via sealed bus to a large, barren facility. Then they are led to an area that is known as the last room.
12. My Name Is Itou Serika2012-06-1624mThe fifteen remaining candidates have been divided into three teams of five. Each team will spend two weeks inside a sealed box, while completing various tasks. The first task is to determine the time.
13. 3-D Ant2012-06-2324mThe sealed box teams are assigned more tasks. These include Running Math, five minutes of mental math while running, and a typing test. Next, they're asked to write a letter of protest to a journalist who is criticizing government funding for space exploration.
14. Broken Glasses and the Sole of the Foot2012-06-3024mAfter five days in their sealed boxes, each team is exhibiting a pronounced personality. Mutta's Team A is rowdy, while Team C is quiet. However, Kenji's Team B appears to be a little gloomy.
15. Let's Talk About Space2012-07-0724mThe exam in the sealed box is halfway over. Mutta's Team A suffered an accident when Fukuda's glasses were broken. But Furuya, the one who broke them, requested a new pair. Meanwhile, Team B must deal with an alarm going off in the middle of the night.
16. Alarm, but No Clock2012-07-1424mThe third exam is halfway over. Mutta works on a completely white puzzle as he ponders why Fukuda-san would break the only clock in the sealed box.
17. The Culprit Is in the Room2012-07-2124mThe third exam inside the sealed boxes has been underway for ten days. Each team has been experiencing unexpected problems, such as broken clocks and mysterious alarms that ring in the middle of the night. However, Mutta soon realizes who is actually responsible.
18. Roo-ra! Kenji!2012-07-2824mThe candidates have only a few days left in the sealed boxes. JAXA has been using green cards to create trouble, gauging each member's ability to respond to stress and trouble.
19. The Day Before Goodbye2012-08-0424mThe teams have two days left in the sealed boxes. Mission Control has deliberately not given certain members of Kenji's Team B any green cards, leading to paranoia. Meanwhile, in Team A, Mutta announces that he has good news, bad news, and dicey news.
20. The Worst Possible Punishment2012-08-1124mIt's their final day in the sealed box. Mutta has enjoyed his two weeks with the team, and he wishes to avert ruining their bond, as they make their final decision.
21. A Long-Awaited Glimpse of the Sky2012-08-1824mWith the third exam finally over, Furuya takes the opportunity to visit the man who made his dream possible.
22. Working on the Dream2012-09-0124mThe third astronaut selection exam has finally ended. Team A used rock-paper-scissors to select two members. Whose dreams are still alive?
23. Father, Son, and Mutta Claus2012-09-0824mMutta has been picked to go to Houston for the final astronaut selection exam. But because his selection means that Kenji wasn't chosen, he has mixed feelings.
24. The Worst Possible Interviewer2012-09-1524mThe final exam is set to take place in two months. Mutta heads to Houston, ahead of the other candidates to look after Apo and tour the Johnson Space Center. Meanwhile, Hibito is training hard for his lunar mission.
25. Sonic Little Brother Training Big Brother2012-09-2224mWith the final astronaut selection exam coming up, Mutta heads to Houston. However, Jennifer has some ominous news.
26. Painful Interview2012-09-2924mSeven days remain before Hibito takes off on a journey to become the first Japanese person to walk on the moon. Meanwhile, Mutta prepares for the final astronaut selection exam at Johnson Space Center.
27. One Question2012-10-0624mThe final NASA interview was a decoy to trick the candidates into relaxing, so the astronauts could evaluate them. However, the candidates have yet to realize this.
28. Miracle of Doha2012-10-1324mWith four days before the launch, Mutta and his family arrive at Kennedy Space Center for one last meal with Hibito before he heads into space. Mutta uses this opportunity to hand Hibito a very special DVD-R.
29. Night Before Launch2012-10-2024mTwo days are left before launch. First, the lunar lander Artemis goes into space on Mars V. Afterwards, Hibito and the rest of the crew will head into space on Mars I.
30. Dog, Old Man, and Alexander2012-10-2724mIt's finally the day of the launch, but the weather doesn't look good. On top of that, Apo's run off, so Mutta has to go find him. While searching for Apo, Mutta comes across a suspicious old man.
31. Rocket Road2012-11-0324mMutta, Apo, and the strange old man watch as Hibito launches off into space. Afterwards, Mutta reminisces about the road taken by Hibito to reach this point.
32. A Private Place2012-11-1024mHibito has made it safely into space, and he's on his way to the moon. Meanwhile, Mutta runs into Azuma and his family, and he decides to approach them.
33. Moon Rabbit2012-11-1724mHibito and the CES-51 crew finally land on the moon. However, Mutta is worried that Hibito will embarrass their country when he takes his first step.
34. Pug and Hug on a Moonlit Night2012-11-2424mHibito and the CES-51 crew have landed on the moon. Meanwhile, Mutta has returned to Japan to await his final exam results. He's especially concerned about using up his luck before the results are announced.
35. From the Little Corner of a Big Facility2012-12-0124mJAXA has begun announcing the results of the final astronaut selection exam. Makabe Kenji receives the first phone call. As Kenji waits to learn his fate, he reflects on his motivation for wanting to be an astronaut.
36. Dancing Astronaut2012-12-0824mWhile Mutta waits to hear if he will become an astronaut, Kenji has received good news. The next candidate to get a call is Serika.
37. Two Men in the Park2012-12-1524mTwo hours have passed since JAXA was supposed to notify the candidates, and Mutta hasn't received a call. When the phone finally rings, he's told to go to a nearby park. What will his fate be?
38. Eleventh E-mail2012-12-2224mAfter a long wait, Mutta learns that he passed the final exam. With no time to enjoy the moment, he is immediately whisked to the press conference, where the other new astronauts wait.
39. Lunar Illusions2013-01-0524mMutta has begun his life as an astronaut. First, he must undergo a month of JAXA training and orientation. Meanwhile, Hibito and Damian head out in a lunar rover to track down a missing probe.
40. Heaven and Hell2013-01-1224mDamian and Hibito leave Moonbase in search of a missing unmanned probe. However, an accident occurs, stranding them inside a ravine.
41. Eighty Minutes to Live2013-01-1924mAfter a buggy accident, Hibito and Damian are stuck at the bottom of a ravine. Damian's spacesuit is damaged, and he's losing body heat quickly. The odds are against them, but Hibito decides that the unmanned drone Gibson is their key out.
42. Hibito's Choice2013-01-2624mHibito manages to bring Damian back to the surface by using Gibson, but he's running out of time, as his oxygen supply dwindles. Will Freddy and Buddy find him in time?
43. Brian2013-02-0224mHibito is able to save Damian, but he's running out of oxygen. Freddy and Buddy are trying to catch him, but they won't arrive before his oxygen depletes. Is this the end?
44. Three Astronauts2013-02-0924mOxygen generation system Brian arrives just in time to save Hibito. Once he and Damian are rescued and back at Moonbase, he reflects on the astronauts who saved him.
45. Five Blue Rangers2013-02-1624mMutta and the other astronaut candidates have finally finished their Japanese training. Before they head to Houston, they receive a gift from Director Nasuda.
46. Number One Restless Guy2013-02-2324mThe JAXA astronaut candidates head to Houston, to begin training at NASA. However, Murakami-san appears to have a surprise in store for Mutta.
47. The First Promise2013-03-0224mMutta and the other astronaut candidates have arrived in Houston to begin training at NASA. First up is a social event to meet the other astronaut candidates from around the world.
48. Always Have a Pedometer in Your Heart2013-03-0924mThe first astronaut candidate task is undergoing a survival training course consisting of a six-day trek through the desert. Meanwhile, Mutta is still worried about Amanti's reaction after she read his fortune.
49. Nitta the Leader2013-03-1624mThe astronaut candidates continue their survival training in the desert. Team E has fallen behind the others, but after Nitta takes the lead, they try to pick up the pace.
50. Nitta and Mutta2013-03-2324mAs the survival training draws to a close, Nitta suddenly tells the team he needs to backtrack due to losing his cell phone, but Mutta stops him. However, Mutta appears to have an idea in mind.
51. Living Stone2013-03-3024mMutta and Nitta backtrack through the desert, looking for Nitta's cell phone. But Nitta cannot find it in time to answer his little brother's call. Has he lost another chance to reach him?
Cast
Top Billed Cast
KENN
Hibito Nanba (voice)
Masayuki Katou
Kenji Makabe (voice)
Miyuki Sawashiro
Serika Itou / Mutta Nanba as a Boy (voice)
Masako Ikeda
Sharon Kaneko (voice)
Yuko Sanpei
Hibito Nanba as a Boy (voice)
Shô Ryûzanji
Tadashi Hoshika (voice)
Ryou Naitou
Yasushi Furuya (voice)
Shintaro Asanuma
Yamato Mizoguchi (voice)
Takanori Hoshino
Reiji Nitta (voice)
Availability
Where To Watch Legally
Crunchyroll
Crunchyroll Amazon Channel
Plex
Plex Channel
Tubi TVStreaming availability data provided by JustWatch.
Recommended
More Like This
SeriesGalaxy Express 999
7.81978
SeriesGachiakuta
8.62025
SeriesSonny Boy
7.42021
SeriesIrina: The Vampire Cosmonaut
6.92021
SeriesStar Blazers: Space Battleship Yamato 2199
7.22013
SeriesAstra Lost in Space
7.72019
SeriesTengoku Daimakyo
8.02023
SeriesGurren Lagann
8.22007
SeriesD_Cide Traumerei the Animation
7.32021
SeriesJoJo's Bizarre Adventure
8.62012
SeriesDaemons of the Shadow Realm
8.52026
SeriesBBK/BRNK
6.92016
Series7SEEDS
7.72019
SeriesDays with My Stepsister
7.72024
SeriesEverything for Demon King Evelogia
7.22021
SeriesTower of God
8.12020
SeriesTenchi Muyo!
7.41992
SeriesMade in Abyss
8.32017
SeriesFullmetal Alchemist: Brotherhood
8.72009
SeriesFushigi Yugi: The Mysterious Play
7.51995
FAQ
Frequently Asked Questions
Is Space Brothers available to watch online?
Yes - see the "Where to watch legally" section on this page for streaming, rental and purchase options.
How many seasons does Space Brothers have?
Space Brothers has 2 seasons and 99 episodes.
When did Space Brothers first air?
Space Brothers first aired in 2012.
Is Space Brothers still running?
Space Brothers's status on TMDB is: Ended.
What genre is Space Brothers?
Space Brothers is classified as Animation, Drama, Sci-Fi & Fantasy.