Space Brothers
When they were young, the brothers Mutta and Hibito promised each other they would become astronauts. Now, in 2025, Hibito has followed his dream to become the first Japanese on the moon, but Mutta has just been fired from his job. His brother reminds him of their childhood promise, and Mutta decides once again to aim for space.

Season 2 · Episode 5 ·
Promise to Drink
After completing survival training, the NASA astronaut candidates are tasked to participate in the upcoming Comeback Competition. Each team receives an advisory engineer, but Mutta's team is stuck with someone who won't help.
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Episode 5 of season 2 of Space Brothers: “Promise to Drink”. Aired 2013-05-04. Watch it online free on ZapFlix.