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Space Brothers

8.22012Ended2 seasons

AnimationDramaSci-Fi & Fantasy

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.

About the series

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.

Network: Nippon TV
Episodes: 99

Choose your chapter

Episodes

Season

Episode 1

Little Brother Hibito and Big Brother Mutta

2012-03-31 24 min

The 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.

Space Brothers | ORYVE

Episode 2

My Shining Star

2012-04-07 24 min

With 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.

Episode 3

The Man with the Advantage and the Running Female Doctor

2012-04-14 24 min

After 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?

Episode 4

Next to Hibito

2012-04-21 24 min

After 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.

Episode 5

Days of Missing

2012-04-28 24 min

After 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.

Episode 6

Et Cetera in My Head

2012-05-05 24 min

Mutta 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.

Episode 7

Dear Hibito

2012-05-12 24 min

After 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.

Episode 8

Smoky Heaven

2012-05-19 24 min

When 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.

Episode 9

Individual Resolve

2012-05-26 24 min

After 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.

Episode 10

Running Bus

2012-06-02 24 min

Mutta 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.

Episode 11

Trapped Rivals

2012-06-09 24 min

The 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.

Episode 12

My Name Is Itou Serika

2012-06-16 24 min

The 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.

Episode 13

3-D Ant

2012-06-23 24 min

The 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.

Episode 14

Broken Glasses and the Sole of the Foot

2012-06-30 24 min

After 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.

Episode 15

Let's Talk About Space

2012-07-07 24 min

The 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.

Episode 16

Alarm, but No Clock

2012-07-14 24 min

The 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.

Episode 17

The Culprit Is in the Room

2012-07-21 24 min

The 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.

Episode 18

Roo-ra! Kenji!

2012-07-28 24 min

The 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.

Episode 19

The Day Before Goodbye

2012-08-04 24 min

The 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.

Episode 20

The Worst Possible Punishment

2012-08-11 24 min

It'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.

Episode 21

A Long-Awaited Glimpse of the Sky

2012-08-18 24 min

With the third exam finally over, Furuya takes the opportunity to visit the man who made his dream possible.

Episode 22

Working on the Dream

2012-09-01 24 min

The third astronaut selection exam has finally ended. Team A used rock-paper-scissors to select two members. Whose dreams are still alive?

Episode 23

Father, Son, and Mutta Claus

2012-09-08 24 min

Mutta 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.

Episode 24

The Worst Possible Interviewer

2012-09-15 24 min

The 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.

Episode 25

Sonic Little Brother Training Big Brother

2012-09-22 24 min

With the final astronaut selection exam coming up, Mutta heads to Houston. However, Jennifer has some ominous news.

Episode 26

Painful Interview

2012-09-29 24 min

Seven 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.

Episode 27

One Question

2012-10-06 24 min

The 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.

Episode 28

Miracle of Doha

2012-10-13 24 min

With 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.

Episode 29

Night Before Launch

2012-10-20 24 min

Two 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.

Episode 30

Dog, Old Man, and Alexander

2012-10-27 24 min

It'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.

Episode 31

Rocket Road

2012-11-03 24 min

Mutta, 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.

Episode 32

A Private Place

2012-11-10 24 min

Hibito 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.

Episode 33

Moon Rabbit

2012-11-17 24 min

Hibito 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.

Episode 34

Pug and Hug on a Moonlit Night

2012-11-24 24 min

Hibito 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.

Episode 35

From the Little Corner of a Big Facility

2012-12-01 24 min

JAXA 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.

Episode 36

Dancing Astronaut

2012-12-08 24 min

While Mutta waits to hear if he will become an astronaut, Kenji has received good news. The next candidate to get a call is Serika.

Episode 37

Two Men in the Park

2012-12-15 24 min

Two 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?

Episode 38

Eleventh E-mail

2012-12-22 24 min

After 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.

Episode 39

Lunar Illusions

2013-01-05 24 min

Mutta 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.

Episode 40

Heaven and Hell

2013-01-12 24 min

Damian and Hibito leave Moonbase in search of a missing unmanned probe. However, an accident occurs, stranding them inside a ravine.

Episode 41

Eighty Minutes to Live

2013-01-19 24 min

After 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.

Episode 42

Hibito's Choice

2013-01-26 24 min

Hibito 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?

Episode 43

Brian

2013-02-02 24 min

Hibito 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?

Episode 44

Three Astronauts

2013-02-09 24 min

Oxygen 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.

Episode 45

Five Blue Rangers

2013-02-16 24 min

Mutta and the other astronaut candidates have finally finished their Japanese training. Before they head to Houston, they receive a gift from Director Nasuda.

Episode 46

Number One Restless Guy

2013-02-23 24 min

The JAXA astronaut candidates head to Houston, to begin training at NASA. However, Murakami-san appears to have a surprise in store for Mutta.

Episode 47

The First Promise

2013-03-02 24 min

Mutta 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.

Episode 48

Always Have a Pedometer in Your Heart

2013-03-09 24 min

The 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.

Episode 49

Nitta the Leader

2013-03-16 24 min

The 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.

Episode 50

Nitta and Mutta

2013-03-23 24 min

As 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.

Episode 51

Living Stone

2013-03-30 24 min

Mutta 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

Hiroaki Hirata

Hiroaki Hirata

Mutta Nanba (voice)

KENN

KENN

Hibito Nanba (voice)

Masayuki Katou

Masayuki Katou

Kenji Makabe (voice)

Miyuki Sawashiro

Miyuki Sawashiro

Serika Itou / Mutta Nanba as a Boy (voice)

Masako Ikeda

Masako Ikeda

Sharon Kaneko (voice)

Yuko Sanpei

Yuko Sanpei

Hibito Nanba as a Boy (voice)

Shô Ryûzanji

Shô Ryûzanji

Tadashi Hoshika (voice)

Ryou Naitou

Ryou Naitou

Yasushi Furuya (voice)

Shintaro Asanuma

Shintaro Asanuma

Yamato Mizoguchi (voice)

Takanori Hoshino

Takanori Hoshino

Reiji Nitta (voice)

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