Space Brothers

In the mid-21st century, mankind has begun the exploration of space, and one company, Planet Catcher Corporation, has pioneered capturing asteroids and comets to mine the resources within them for use on Earth. On one such asteroid, Tortatis, lives 12-year-old Nanbu Ushiwaka - the only child ever to be born in space and survive. But survival itself is no longer guaranteed - a military satellite triggers a disaster during a operation to capture Halley`s Comet, and Ushiwaka and his fellow colonists must find a way to survive when both their country and their company abandon them. Can they escape before the nuclear reactor on the asteroid melts down? Or are they doomed to die as they lived, among the stars?

Sato Takahiro was an ordinary office worker and hobbyist gamer until the day he woke up on a spaceship–one that strangely resembled a craft from a favorite space-shooter game. With a decked-out ship, a crew full of babes, and a fantastic universe to explore, he's going to make the most of his good luck and create the life he's always dreamed of!

The anime's original story features Mutta and Hibito during one summer when they were children. During the summer when Mutta and Hibito made their promise to go to space, they met a young girl who also had a wish.

"The previously unwritten true beginning of the manga, which embodies Japan in dreams and emotions, is being made into an animation film. This is the origin story. This is chapter 0."