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.
Reviews
Just what I expected
Absolutely Fantastic
A terrific literary drama and character piece that shows how the process of creating art can be seen differently by those doing it and those looking at it from the outside.
I didn’t really have many expectations going into the movie (good or bad), but I actually really enjoyed it. I really liked the characters and the banter between them.