Two brothers looked to the starry skies as children and made a promise... Now, in the year 2025, the younger brother, Hibito, is carrying his out. He is an astronaut who has been selected as a crew member for mankind’s first long-term base on the moon. Meanwhile, the older brother, Mutta, has just been fired from his job and is unemployed, but decides to trust himself just one last time. A text message from Hibito sends him applying to be an astronaut too and shooting for the stars… The official Space Brothers manga is ready to launch!
A reunion on the moon is what Mutta and Hibito have been dreaming of. At this historic moment, the entire world rejoices with them! Then, seeing how this is the first time they have met the Maxim 4 on the moon, Mutta and Phillipe put together a welcome party for them. The lonely lunar life is completely transformed by the arrival of the Maxim 4. Now let’s complete the international rescue mission FMTE by safely returning to the Earth together!