A seven-years-later post-apocalyptic metropolis known as Kamitsubaki City rises from the ruins of a global catastrophe. Beneath its façade of hope lurk monstrous beings called Tesseractors, manifestations of human darkness that threaten the fragile peace. Only a group of five young Witchlings, whose magical singing can purify these creatures, stand between safety and chaos. Led by Kafu Morisaki, one Witchling retains her humanity through song—and becomes the key to healing both monsters and the city itself. Directed and written by Kōdai Kakimoto, animated by Shogakukan Music & Digital Entertainment, and featuring music by Kento Asahina, the 13-episode series premiered July 3, 2025, on TBS and streams worldwide on Crunchyroll. With its fusion of music, mystery, and supernatural tension, Kamitsubaki invites viewers into an eerie yet emotionally resonant world.