The Demon Girl Next Door

is a Japanese four-panel manga series by Izumi Itō, serialized in Houbunsha's seinen manga magazine Manga Time Kirara Carat since 2014. An anime adaptation by J.C.Staff premiered on July 11, 2019. A second season of the anime was announced on August 27, 2020 presumably by the same studio.

Plot
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.

Other Sources

 * Manga
 * Anime
 * Anime
 * Anime