Included on a DVD within the limited edition of the manga's volume 17.

Apo, the pet dog from the manga, will star in the anime.

Mutta's life has hit rock bottom. He's been fired, blackballed from his profession and now he's had to move back in with his parents. Meanwhile, his kid brother Hibito has been literally riding a rocket and training to be an astronaut. The same career Mutta once dreamed of. So, is it ever too late to go after your dreams? Through a little coercing and a bit of covert activity, Mutta's family and friends can get his resume on the right desk, but from that point on it will be up to Mutta himself. Does he have what it takes to turn his life around and put his footprint on the moon? The first step on the highway to the stars is always the hardest, and in a job where crash and burn isn't just a euphemism, it will be the biggest risk Mutta's ever taken. But with the best support team ever, maybe he'll find what he needs to rekindle the spark inside him and light the biggest candle of them all!

[Source: Sentai Filmworks]

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.

[Source: Anime News Network]

A prequel to the TV anime series.

During a random night, the two brothers Mutta Nanba and Hibito witness what seems to be a UFO flying to the moon and they both vow to eventually become astronauts. 19 years later, Mutta has the opportunity to follow his brother and fulfill his promise.

[Source: IMDb]