Space Brothers (2012) on Netflix

Plot summary

One night in their childhood, Mutta Namba and his younger brother Hibito watched what they believed was a UFO pass near the Moon. Fascinated by space, the two made a pact to become astronauts and to meet one day in outer space. Years later, Hibito has been chosen as the first Japanese astronaut to take part in a mission to the Moon. Mutta, the older brother, abandoned that dream and worked as a car designer, and he has just lost the job. Then a telephone call from Hibito brings back that childhood night and the promise the brothers made, and Mutta's old wish to travel into space returns.