The Boy Who Plays the Rainbow

I liked the fresh subject matter of light performance, that is, Light Music, which embeds and radiates messages in light.
In particular, the term Light Music itself was fresh.

However, the story itself was not fresh.
Somewhat common conspiracies and interference from the powerful, and the protagonist and surrounding characters who stand up against them.
It also includes a cringey Japanese-style emotional ending, making it feel like watching a Japanese school-themed manga.

I think it will be remembered as a work with only a good subject matter.