Series by 小山宙哉

In 2025, brothers Mutta and Hibito Nanba live on very different paths after a childhood promise about space. Hibito has become an astronaut and serves on a long-term lunar mission. Mutta loses his job and struggles with the gap between his dream and his current life. A message from Hibito pushes him to believe in himself again. Mutta begins the process of aiming for space through astronaut selection.