PARIS — Pharrell Williams has found a happy place for his inner child, and it’s a manga-style fantasy in which children have taken up arms. That’s the gist of “A Call To Action,” a new exhibition the American singer, producer and entrepreneur has curated for the Guimet Museum, a collection of Asian art here.

The show was created at Mr. Williams’s invitation by Mr., a 49-year-old Japanese visual artist known for his colorful work inspired by the manga and anime traditions.

The single-room exhibition is bright and deliberately chaotic: Visitors step onto plastic sheets splashed with paint, with blocks of concrete and drawings scattered around the floor. Large-scale paintings and figurines are dwarfed by even larger graffiti and neon signs. The main figures in this post-apocalyptic scene are young boys and girls, and most of them are carrying multicolored guns.

Mr. Williams is a collector of Mr.’s work, which “just seems like it’s from the point of view of a perpetual teenager,” the singer said in an interview in the exhibition space last week. “His imagination has no boundaries, no ceiling or floor,” he added.