A sequel to the 1980 movie The Legend of the Stardust Brothers. As well as being a rock musical comedy, it also borrows elements from other genres such as road movies, westerns, and meta fiction.

The Brand New Legend of the Stardust Brothers

Kazuyoshi Saitо made an offer to collaborate with Naoki Urasawa, with whom he has a close relationship, after he saw Urasawa's rough drawing of a boy who strummed a broom like a guitar. The image matched what Saitо completely had in mind for his song "Boy." Urasawa created a storyboard, and completed an animation on his own for the first time. Urasawa also illustrated the song's album cover.