This is a DVD rip of the Space Brothers #0 movie retail release (2016-09-23).
The story is a prequel to where the TV series begins, following Hibito's training at NASA, the death up Brian Jay, leading up to the point where Mutta gets fired from his job and decides to become an astronaut.
Some other torrents on this site are dead/broken/scams. This is a real DVD rip from a retail copy.
Original Japanese audio, no subtitles. Resolution: 853x480 File Size: 1.79GB