The WORST episodes of Space Brothers

Every episode of Space Brothers ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Space Brothers!

One night in 2006, when they were young, the two brothers Mutta (born 1993) and Hibito (born 1996) saw what appeared to be a UFO heading for the moon. They decided that night to both become astronauts and travel out into space. In 2025, Hibito has become an astronaut, and he's going to go to the moon. Mutta ended up following a more traditional career path with an auto development company. However, Mutta just ruined his career through a violent altercation with his boss. Now, not only has he lost his job, he appears to be blacklisted in the entire industry. Maybe this is a rare opportunity for Mutta to once again chase his childhood dream and become an astronaut like his little brother!

Last Updated: 7/14/2025Network: YTV (JP)Status: Ended
Do I Have Good Luck?
star
5.83
6 votes

#1 - Do I Have Good Luck?

Season 2 - Episode 3 - Aired 4/20/2013

Recap episode. Mutta recalls watching Hibito's launch, as well as the events of his JAXA exams.

Stand on the Moon Together Alive
star
5.86
7 votes

#2 - Stand on the Moon Together Alive

Season 2 - Episode 2 - Aired 4/13/2013

Recap episode. Hibito recalls the ordeal of his accident on the moon.

Our Future
star
6.00
8 votes

#3 - Our Future

Season 2 - Episode 44 - Aired 2/22/2014

Eddie Jay's arrival has given the CES-62 sub crew a much-needed jolt. After a night jog brings the crew closer together, Eddie suggests that the crew members share their stories.

A Big Brother is Always...
star
6.50
10 votes

#4 - A Big Brother is Always...

Season 2 - Episode 1 - Aired 4/6/2013

Recap episode. Mutta recalls how he first got accepted for the JAXA training program.

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Dancing Astronaut
star
6.64
14 votes

#5 - Dancing Astronaut

Season 1 - Episode 36 - Aired 12/9/2012

As Serika visits her father's grave after hearing about her results, she recalls her childhood. Being a biologist who studied 'little universes', Rinpei Itou inspired Serika to want to be an astronaut. Rinpei soon became hospitalised with a paralyzing brain disorder, so he asked Serika to start a journal to tell him about her daily life. Rinpei's condition soon worsened, as his condition was revealed to be a rare disease. Reading up on Chiaki Mukai, who was an astronaut who developed cures aboard the ISS, Serika became determined to be the same so she could find a cure for Rinpei's condition. However, he passed away soon afterwards. Having learnt that she has passed her exams, Serika celebrates with a nostalgic ice pop.

For Tomorrow
star
6.75
8 votes

#6 - For Tomorrow

Season 2 - Episode 35 - Aired 12/14/2013

Mutta has completed NEEMO training. His final idea impressed many people in NASA. Meanwhile, back in Houston, Hibito continues his rehabilitation.

Worst Enemy
star
7.00
7 votes

#7 - Worst Enemy

Season 2 - Episode 30 - Aired 11/9/2013

Mutta's idea for improving the lunar rover has earned him the right to participate in NEEMO training. He has taken one step toward the moon.

Number One Restless Guy
star
7.07
14 votes

#8 - Number One Restless Guy

Season 1 - Episode 46 - Aired 2/24/2013

As the astronaut candidates arrive at the airport, Serika and Ena think back to their last meals with their friends and family. Serika had dinner with her friends and grandparents whilst Ena spent time with her younger sister, Kei, helping her decide what she wants to do in the future. Meanwhile, Mutta attracts a lot of attention after Murasaki tricks him into putting on his jumpsuit in the airport. Meanwhile at NASA, astronaut Vincent Bold is assigned as the training instructor for the new trainees. Upon arriving at Houston, Mutta meets up with Ozzy, who helps him and Kenji set up accomodation in Hibito's house.

An Cosmonaut's Daughter
star
7.10
10 votes

#9 - An Cosmonaut's Daughter

Season 2 - Episode 26 - Aired 10/12/2013

Hibito continues to struggle in rehab. Russian astronaut Ivan Tolstoy shows Hibito videos of his daughter as a child, learning ballet. Will the videos give Hibito his answer?

To the Place Where I Belong
star
7.13
8 votes

#10 - To the Place Where I Belong

Season 2 - Episode 36 - Aired 12/21/2013

Mutta has completed his NEEMO training and now waits to learn if he will be heading to the moon. Back in Houston, Hibito also completes his rehabilitation training. All that remains is to demonstrate to NASA that he has made a full recovery.

The Ultimate Astronaut
star
7.14
7 votes

#11 - The Ultimate Astronaut

Season 2 - Episode 47 - Aired 3/15/2014

Hibito has gone missing. Mutta suffers from distraction causing him to lose focus during mission training. Mutta and Chief Butler are searching for any option to change NASA's mind on Hibito.

Always Have a Pedometer in Your Heart
star
7.14
14 votes

#12 - Always Have a Pedometer in Your Heart

Season 1 - Episode 48 - Aired 3/10/2013

The astronaut candidates are briefed on their training, with Bold stating he plans to make everyone go through two years of training in a year and a half, to the surprise of his fellow instructor, Larry Bison. He starts off with the hard stuff right away by putting everyone through survival training in the desert, where they must walk all the way to Amarillo. Mutta's group, consisting of the JAXA candidates and Amanti, meet up with their advisors, Mike Davis and, to Mutta's surprise, Lowry, who provide them with lunch before informing them they'll need to forage further meals themselves.

Sonic Little Brother Training Big Brother
star
7.18
11 votes

#13 - Sonic Little Brother Training Big Brother

Season 1 - Episode 25 - Aired 9/23/2012

As Hibito recalls how he came to admire Azuma, he tells Mutta how his final astronaut selection exam was an interview with one of the Japanese astronauts. As Mutta ponders how he should spend his time before the exam, he witnesses Hibito piloting a jet craft, reminding Mutta of how he came to support him. As the day count down towards Hibito's launch, Mutta trains his body and mind with Ozzy to prepare for his interview. Seven days before the launch, as Hibito is moved into quarantine, Serika and the other candidates travel with Mutta's parents to Houston.

Five Blue Rangers
star
7.20
15 votes

#14 - Five Blue Rangers

Season 1 - Episode 45 - Aired 2/17/2013

Mutta pays a visit to Sharon, who is shocked to hear how much danger Hibito was in. She reveals that her astronomy team has received funding to build a lunar telescope on the moon, which would allow people to see further into space, an idea spurred by her late husband, Shinichi, who named an asteroid after her before he passed away from an illness. This spurs on Mutta to fulfil his promise to Sharon, along with his promise to Hibito. Later, Mutta and the others receive their official JAXA jumpsuits before being informed they will be travelling to Houston tomorrow to begin their joint astronaut training.

Dog, Old Man, and Alexander
star
7.20
10 votes

#15 - Dog, Old Man, and Alexander

Season 1 - Episode 30 - Aired 10/28/2012

As Mutta and the others search for Apo, Mutta finds him being carried off by a strange old NASA employee named Deneil Young, who takes Mutta for a ride to a place featuring abandoned training facilities. Reaching the top of an old blockhouse, Mutta is treated to a spectacular view of the launchpad. As the Mars I finally lifts off, Mutta stands back and watches in awe.

The Worst Possible Interviewer
star
7.20
10 votes

#16 - The Worst Possible Interviewer

Season 1 - Episode 24 - Aired 9/16/2012

As Hibito trains to use a space vechile for his moon mission, Mutta does some lawn mowing for Ozzy. Later, Mutta has dinner with Jennifer and Lowry, Hibito's backup, where he learns the examiner for the final exams will be Takio Azuma, who allegedly holds a grudge against Hibito for being selected to go on the moon instead of him, putting Mutta at a disadvantage.

The First Promise
star
7.21
14 votes

#17 - The First Promise

Season 1 - Episode 47 - Aired 3/3/2013

Whilst Serika and Ena manage to find a place to live, Mutta becomes curious about something Murasaki allegedly mentioned to Kenji about the training during the flight. Deciding to ask Murasaki himself, he mentions how a few astronauts always seem to leave at some point during the training due to not being up to snuff. He goes on to explain the role of astronauts is akin to those of actors, stating he himself has never gotten the chance to 'stand on stage'. Later, the group go to the mission control center, where Mutta hears from Jennifer that Hibito probably won't be approved for any EVA operations for the duration of the mission. Afterwards, a party is held for all the trainee astronauts, where the group meet Amanti Patel from India, who has a hobby of reading people's fortunes. When asked to read Mutta's future, she has an unsteady feeling.

Smoky Heaven
star
7.21
14 votes

#18 - Smoky Heaven

Season 1 - Episode 8 - Aired 5/20/2012

As Mutta's somehow manages to apprehend the robber by chance, he gains a lot of attention and is praised as a hero on a live TV broadcast, which is seen by Hibito and the JAXA judges. Afterwards, Mutta receives a video message from his parents, revealing he has passed the second exam. Before leaving for Japan, Mutta discovers a hidden set of wills written by Hibito which leaves him concerned.

Lonely People
star
7.22
9 votes

#19 - Lonely People

Season 2 - Episode 41 - Aired 2/1/2014

Hibito has passed his test to return to active duty. With that over, Mutta can focus on starting his backup crew training for a lunar mission.

Olga, Hibito and Gagarin
star
7.22
9 votes

#20 - Olga, Hibito and Gagarin

Season 2 - Episode 28 - Aired 10/26/2013

NASA and JAXA have decided to bring Hibito back to Houston, placing him in a supporting role. Hibito has no choice but to pack up and make his farewells.

Lunar Illusions
star
7.31
13 votes

#21 - Lunar Illusions

Season 1 - Episode 39 - Aired 1/6/2013

As Mutta and the others begin their first day at JAXA, they receive a talk from Murasaki about the training they will go through to become fully fledged astronauts. Meanwhile on the moon, Hibito and co-astronaut Damian are sent on a mission to recover a damaged space probe, struggling with the illusions the moon plays on perception, whilst fellow astronauts Buddy Waters and Karen Jones host a television special. Whilst trying to open a compartment on their buggy, Hibito and Damian lose track of where they are going and end up driving into a crater.

Out of Time
star
7.33
9 votes

#22 - Out of Time

Season 2 - Episode 27 - Aired 10/19/2013

Inspired by Olga's performance, Hibito continues his rehabilitation. Ivan comes up with a unique approach that may start Hibito down the path to recovery.

Dear Hibito
star
7.33
12 votes

#23 - Dear Hibito

Season 1 - Episode 7 - Aired 5/13/2012

As Hibito notices Mutta acting strangely, he suspects that something is up. Mutta eventually confesses about his high chance of failure, and appears to have resided to think he has no chance. Meanwhile, Hoshika has trouble trying to convince another judge to change his mind about Mutta. As Mutta spends time with the pet walkers following being told off by Hibito, the restaurant he is visiting is attacked by a fire extinguisher weilding robber.

Individual Resolve
star
7.33
12 votes

#24 - Individual Resolve

Season 1 - Episode 9 - Aired 5/27/2012

As he arrives in Japan, Mutta remains concerned about the wills Hibito wrote before going outside to see the International Space Station in the sky. Later, he meets up with Kenji and Serika to celebrate making it to the third exam. The three talk about their motives for going into space, with Serika wanted to go on the ISS, despite the fact it will probably be shut down by the time she makes it to space. He hears from another collegue that she wants to carry on the dream of her late father to develop medicine to cure a disease, which can only be done on the ISS.

Working on the Dream
star
7.33
12 votes

#25 - Working on the Dream

Season 1 - Episode 22 - Aired 9/2/2012

Team A get together to celebrate the winners of the match, Serika and Reiji, on passing the third exam. Meanwhile, the JAXA staff have discussions about which of the remaining candidates to select, with Hoshika pointing out how Team A was the only one who promised to get together upon leaving. Four days later, it is revealed Houston will select one male from the remaining candidates to become an astronaut, with Mutta assuming Kenji is likely to be chosen over him. As Mutta worries about his lack of luck, Hibito carries on his training, curious about what Mutta's reply will be. As Mutta hangs out with Naoto, it is revealed that Mutta had been chosen to go to Houston which boths excites Mutta but also causes him to be concerned about Kenji.