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Season guide

Space Brothers: Season 1

51 episodes Premiered Mar 31, 2012 Updated Jul 21, 2026
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Episodes

S1·E1

Little Brother Hibito and Big Brother Mutta

Mar 31, 2012 · 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.

S1·E2

My Shining Star

Apr 7, 2012 · 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

S1·E4

Next to Hibito

Apr 21, 2012 · 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 li

S1·E5

Days of Missing

Apr 28, 2012 · 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

S1·E6

Et Cetera in My Head

May 5, 2012 · 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

S1·E7

Dear Hibito

May 12, 2012 · 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 mult

S1·E8

Smoky Heaven

May 19, 2012 · 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

S1·E9

Individual Resolve

May 26, 2012 · 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 t

S1·E10

Running Bus

Jun 2, 2012 · 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

S1·E11

Trapped Rivals

Jun 9, 2012 · 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 las

S1·E12

My Name Is Itou Serika

Jun 16, 2012 · 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 t

S1·E13

3-D Ant

Jun 23, 2012 · 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 pro

S1·E14

Broken Glasses and the Sole of the Foot

Jun 30, 2012 · 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 lit

S1·E15

Let's Talk About Space

Jul 7, 2012 · 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. Meanwhi

S1·E16

Alarm, but No Clock

Jul 14, 2012 · 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.

S1·E17

The Culprit Is in the Room

Jul 21, 2012 · 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

S1·E18

Roo-ra! Kenji!

Jul 28, 2012 · 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.

S1·E19

The Day Before Goodbye

Aug 4, 2012 · 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 T

S1·E20

The Worst Possible Punishment

Aug 11, 2012 · 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.

S1·E21

A Long-Awaited Glimpse of the Sky

Aug 18, 2012 · 24 min

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

S1·E22

Working on the Dream

Sep 1, 2012 · 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?

S1·E23

Father, Son, and Mutta Claus

Sep 8, 2012 · 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.

S1·E24

The Worst Possible Interviewer

Sep 15, 2012 · 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 t

S1·E26

Painful Interview

Sep 29, 2012 · 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

S1·E27

One Question

Oct 6, 2012 · 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.

S1·E28

Miracle of Doha

Oct 13, 2012 · 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

S1·E29

Night Before Launch

Oct 20, 2012 · 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.

S1·E30

Dog, Old Man, and Alexander

Oct 27, 2012 · 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 sus

S1·E31

Rocket Road

Nov 3, 2012 · 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.

S1·E32

A Private Place

Nov 10, 2012 · 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.

S1·E33

Moon Rabbit

Nov 17, 2012 · 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.

S1·E34

Pug and Hug on a Moonlit Night

Nov 24, 2012 · 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

S1·E35

From the Little Corner of a Big Facility

Dec 1, 2012 · 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 motiva

S1·E36

Dancing Astronaut

Dec 8, 2012 · 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.

S1·E37

Two Men in the Park

Dec 15, 2012 · 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

S1·E38

Eleventh E-mail

Dec 22, 2012 · 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 w

S1·E39

Lunar Illusions

Jan 5, 2013 · 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 mi

S1·E40

Heaven and Hell

Jan 12, 2013 · 24 min

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

S1·E41

Eighty Minutes to Live

Jan 19, 2013 · 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 Hibi

S1·E42

Hibito's Choice

Jan 26, 2013 · 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?

S1·E43

Brian

Feb 2, 2013 · 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?

S1·E44

Three Astronauts

Feb 9, 2013 · 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.

S1·E45

Five Blue Rangers

Feb 16, 2013 · 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.

S1·E46

Number One Restless Guy

Feb 23, 2013 · 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.

S1·E47

The First Promise

Mar 2, 2013 · 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.

S1·E48

Always Have a Pedometer in Your Heart

Mar 9, 2013 · 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 reacti

S1·E49

Nitta the Leader

Mar 16, 2013 · 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.

S1·E50

Nitta and Mutta

Mar 23, 2013 · 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

S1·E51

Living Stone

Mar 30, 2013 · 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 re