Space Brothers follows the inspiring journey of brothers Mutta and Hibito Nanba, who vow as children to become astronauts and reach the moon. The series delves into themes of perseverance, familial bonds, overcoming failure, and the human drive for space exploration.
This curated collection of 25 canonical quotes from the anime and manga highlights emotional depth, character growth, and connections to these broader themes, drawing from various arcs for a balanced mix of intense challenges and reflective moments.
The desire to succeed, your admiration of space, your ambition. Vertical can convey all of that in a straightforward way
Episode Details: (Episode 1 – My Little Brother Hibito and Me)
Speaker: Mutta Nanba
Context: Reflects Mutta’s renewed ambition, marking his growth from doubt to determination in pursuing dreams.
If we are truly Earth’s genes, the purpose of space exploration is because mutation is necessary
Episode Details: (Episode 13 – 3D Ant)
Speaker: Ryūnosuke Tomii
Context: Emphasizes humanity’s evolutionary drive, evoking wonder and philosophical depth in space themes.
Michael Ende once compared humans to cancer cells, but I believe that humans are germ cells. However, there is the possibility that any of us could become the cancer cell that destroys Earth
Episode Details: (Episode 13 – 3D Ant)
Speaker: Ryūnosuke Tomii
Context: Highlights ethical responsibility, fostering introspection on human impact and growth.
The American thinker Buckminster Fuller once called our planet “Spaceship Earth”. On the other hand, British scientist James Lovelock stated that our planet was a life form named Gaia
Episode Details: (Episode 13 – 3D Ant)
Speaker: Ryūnosuke Tomii
Context: Connects Earth to cosmic exploration, inspiring awe and thematic unity in brotherhood’s quest.
It would have been faster to crunch the numbers in my head! My mental abacus was too realistic! The beads kept sliding around because I was running
Episode Details: (Episode 13 – 3D Ant)
Speaker: Mutta Nanba
Context: Shows Mutta’s quirky resilience under pressure, highlighting humor in character development.
I did two hundred, sixteen squats yesterday, and I feel just fine
Episode Details: (Episode 26 – Promise to My Woman)
Speaker: Mutta Nanba
Context: Demonstrates physical and mental grit, emotionally underscoring perseverance in training arcs.
First, you see the big guy over there? He’s athletic, with plenty of muscle, as you can see. He likes to act cool and play the tough guy. However… His cell phone wallpaper is a cat
Episode Details: (Episode 26 – Promise to My Woman)
Speaker: Mutta Nanba
Context: Reveals observational skills, adding levity and growth in team dynamics.
Nothing is definite in this world. But it’s okay. Some things within me are definite
Episode Details: (Episode 31 – The Day Before Goodbye)
Speaker: Hibito Nanba
Context: Conveys inner certainty amid uncertainty, emotionally weighting Hibito’s maturation before launch.l
How does it feel to watch your little brother go into space? … It was more or less like the sky today. It started off cloudy. Then it cleared up a little…And now, it’s sunny
Episode Details: (Episode 31 – The Day Before Goodbye)
Speaker: Mutta Nanba
Context: Captures brotherly pride and relief, tying to themes of familial support and hope
Well, life is like the weather. It can be sunny or cloudy. Sometimes it rains, and sometimes it storms. It can be a pain…By the way Mutta, do you know the biggest difference between life and the sky?…The sky doesn’t belong to anyone. Your life belongs to you. You can control your own life
Episode Details: (Episode 31 – The Day Before Goodbye)
Speaker: Deneil Young
Context: Inspires agency over destiny, with emotional uplift in mentoring Mutta’s growth.
All we can do is live until the day we die. Control what we can…and fly free
Episode Details: (Episode 31 – The Day Before Goodbye)
Speaker: Deneil Young
Context: Emphasizes freedom and control, resonating with themes of living boldly in space pursuits
It is unfortunate that the person who should’ve stepped on the moon before me is not here
Episode Details: (Chapter 1 – The Promise)
Speaker: Hibito Nanba
Context: Highlights brotherly rivalry, emotionally fueling Mutta’s development in early arcs
It’s unfortunate that my younger brother, who went to the moon first is not present at the moment
Episode Details: (Chapter 211 – To the Moon)
Speaker: Mutta Nanba
Context: Echoes sibling bond, showing Mutta’s growth and thematic closure in later arcs
My greatest enemy is usually myself
Episode Details: (Episode 1 – My Little Brother Hibito and Me)
Speaker: Mutta Nanba
Context: Reveals self-doubt, marking emotional start to Mutta’s journey of self-overcoming.youtube
Two hundred and sixteen? Such a half-assed number. You couldn’t manage four more?
Episode Details: (Episode 26 – Promise to My Woman)
Speaker: Nanba Family (Father)
Context: Adds familial humor, connecting to themes of encouragement in peaceful moments.
Yay!
Episode Details: (Episode 43 – On the Moon)
Speaker: Hibito Nanba
Context: Iconic first words on moon, evoking joy and triumph in high-stakes arc
Humans can be considered the Earth’s genes. The planet is trying to self-replicate. That is natural behavior for a life form
Episode Details: (Episode 13 – 3D Ant)
Speaker: Ryūnosuke Tomii
Context: Philosophical take on exploration, deepening thematic purpose with intellectual weight.animephrases
I was always puzzled by the contrast between spaceship and life form
Episode Details: (Episode 13 – 3D Ant)
Speaker: Ryūnosuke Tomii
Context: Sparks curiosity, reflecting character growth through scientific wonder.
Your life belongs to you. You can control your own life
Episode Details: (Episode 31 – The Day Before Goodbye)
Speaker: Deneil Young
Context: Empowers personal agency, emotionally impactful in mentoring themes.
Nothing’s perfect, the world’s not perfect, but it’s there for us, trying the best it can
Episode Details: (General series theme, referenced in multiple episodes)
Speaker: Mutta Nanba
Context: Embraces imperfection, highlighting resilience and growth in adversityf
When you give up, that’s when the game ends
Episode Details: (Episode 26 – Promise to My Woman)
Speaker: Mutta Nanba
Context: Motivates persistence, tying to character development in training challenges.
If you don’t like your destiny, don’t accept it. Instead, have the courage to change it the way you want it to be
Episode Details: (Episode 1 – My Little Brother Hibito and Me)
Speaker: Hibito Nanba
Context: Inspires bold action, emotionally weighting Hibito’s role in brother’s arc.
The world is cruel, but also beautiful
Episode Details: (Episode 43 – On the Moon)
Speaker: Hibito Nanba
Context: Reflects on hardships, showing maturity post-near-death experience.
Fear is not evil. It tells you what your weakness is. And once you know your weakness, you can become stronger as well as kinder
Episode Details: (Episode 31 – The Day Before Goodbye)
Speaker: Deneil Young
Context: Transforms fear into growth, with emotional depth in overcoming panic.
Don’t be so quick to throw away your life. No matter how disgraceful or embarrassing it may be, you need to keep struggling to find your way out until the very end
Episode Details: (Episode 43 – On the Moon)
Speaker: Mutta Nanba
Context: Urges endurance, highlighting brotherhood and survival themes in intense moments.
