Awakening her dormant abilities as a devil one day, Yuuko Yoshida aka Shadow Mistress Yuuko, is entrusted with the mission to defeat the Light clan's shrine maiden, a magical girl, by her ancestor Lilith. Yuuko meets magical girl Momo Chiyoda through her classmate Anri Sada, and challenges her to a duel, but loses quickly due to her lack of strength.

Since then, Yuuko has struggled with her role as a devil and her duel with Momo, and borrowed help from her regularly. However, by a strange coincidence, Yuuko also weakens Momo by taking away her power to cooperate in protecting the peace of Tama city.

Yuuko Yoshida: Konomi Kohara (Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen)
Momo Chiyoda: Akari Kito (Hitoribocchi no Marumaru Seikatsu)
Lilith: Minami Takahashi (Kobayashi-san Chi no Maid Dragon)
Mikan Hinatsuki: Tomoyo Takayanagi (Uma Musume: Pretty Derby)

Director: Hiroaki Sakurai (Kaichou wa Maid-sama!)
Series Composition: Keiichirou Ohchi(Hinamatsuri)
Character Design: Mai Ootsuka (Non Non Biyori)
Studio: J.C.Staff