Uchuu Kyoudai

Space Brothers

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Alternative Titles

Synonyms: Uchuu Kyodai
Japanese: 宇宙兄弟
English: Space Brothers
German: Space Brothers
Spanish: Uchuu Kyoudai: Space Brothers
French: Space Brothers
More titles


Type: TV
Episodes: 99
Status: Finished Airing
Aired: Apr 1, 2012 to Mar 22, 2014
Premiered: Spring 2012
Broadcast: Sundays at 07:00 (JST)
Licensors: Sentai Filmworks
Studios: A-1 Pictures
Source: Manga
Genres: ComedyComedy, Sci-FiSci-Fi
Themes: Adult CastAdult Cast, SpaceSpace, WorkplaceWorkplace
Demographic: SeinenSeinen
Duration: 24 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 8.491 (scored by 5195351,953 users)
1 indicates a weighted score.
Ranked: #1372
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1202
Members: 190,889
Favorites: 3,827

Available At


Streaming Platforms

Ranked #137Popularity #1202Members 190,889
Add to My List
Episodes: /99


On a fateful summer night in 2006, Mutta Nanba and his younger brother Hibito witness what they believe to be a UFO flying toward the Moon. This impressing and unusual phenomenon leads both siblings vowing to become astronauts, with Hibito aiming for the Moon and Mutta, convinced that the eldest brother has to be one step ahead, for Mars.

Now an adult, life hasn't turned out how Mutta had pictured it: he is diligently working in an automotive company, whereas Hibito is on his way to be the very first Japanese man to step on the Moon. However, after losing his job, Mutta is presented with an unexpected opportunity to catch up to his younger brother when the Japanese Aerospace Exploration Agency, commonly known as JAXA, accepts his application to participate in the next astronaut selection. Despite self-doubts about his prospects, Mutta is unwilling to waste this chance of a lifetime, and thus embarks on an ambitious journey to fulfill the promise made 19 years ago.

[Written by MAL Rewrite]


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Episode Videos

Related Anime

Characters & Voice Actors


Nagai, Kouji
Producer, Planning
Watanabe, Ayumu
Kobayashi, Katsuyoshi
Sound Director
Ishii, Toshimasa
Episode Director, Storyboard


Opening Theme

Apple Music
Amazon Music
Youtube Music
1: "Feel So Moon" by Unicorn  (eps 1-13)
2: "Eureka (ユリーカ)" by Sukima Switch (eps 14-26)
3: "Yume Miru Sekai (夢見る世界)" by DOES  (eps 27-38)
4: "Small World" by Fujifabric (eps 39-51)
5: "Kienai E (消えない絵)" by Magokoro Brothers (eps 52-64)
6: "Crater (クレーター)" by Merengue  (eps 65-75)
7: "HALO" by tacica  (eps 76-87)
8: "B.B" by THE Yatou (eps 88-99)

Ending Theme

1: "Subarashiki Sekai (素晴らしき世界)" by Rake  (eps 1-13)
2: "Kokuhaku (告白)" by Angela Aki  (eps 14-26)
3: "Tete (テテ)" by Akihisa Kondou (eps 27-38)
4: "Goodbye Isaac (グッバイ・アイザック)" by Motohiro Hata (eps 39-51)
5: "BEYOND" by Miho Fukuhara (eps 52-64)
6: "Yozora no Taiyou (夜空の太陽)" by Flower Companyz (eps 65-75)
7: "New World" by Kasarinchu  (eps 76-87)
8: "Anata ga Ireba OK!" by Serena  (eps 88-99)


Feb 10, 2014
At first glance Space Brothers seems to be an anime about two brothers that just go space and do astronaut things, but oh ho, dear reader, it is so much more than that. It is a realistic journey delving into one of the most difficult professions ever conceived by man. Now that the series has concluded [for the time being], a proper review is in order. But first, we better shake hands.

Space Brothers cleverly depicts the pursuits of Mutta and Hibito, converging their storylines at some times and following them separately at others. This structure is beneficial to the flow and progression, and earns ...
Jun 17, 2016
Mixed Feelings
This anime is great up until around episode 21. After that supporting cast members start having their life stories fleshed out. Most of these episodes are quite boring, the motivations provided are often bland and even when they aren't they feel drawn out.

Around this point is when the tone becomes an issue. I'm sure most anime veterans are used to the same music being used for every "dramatic" or "inspiring" moment in an anime. Sometimes well, sometimes not but it always feels a bit like the creators are cheating a little to add emotion to a scene that doesn't otherwise earn it. This anime ...
Jun 19, 2022
Quick review with big super spoil !!

- at the beginning the story evolved quite fast and you'll think "wow 99ep , it's gonna be a wonderful adventure who will end on Mars ... or the Moon at least ... very far from the control room... SIC

- after a very good start, one of the most promising, around ep 21, you'll start to think, " there's way to much the same flashback " but it's ok !
and the story start to spend to much time on support characters, and then more boring drama on support character, if fact you start to ...

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