The Demon Girl Next Door (2019)

Yuuko Yoshida, known as Shadow Mistress Yuuko, suddenly awakens her devilish powers and receives a daunting task from her ancestor Lilith: defeat the shrine maiden of the Light clan, a magical girl named Momo Chiyoda. After a quick and humiliating loss in their duel, Yuuko grapples with her identity and her newfound responsibilities. Despite her struggles, she finds herself inadvertently weakening Momo, complicating their dynamic as they both work together to maintain peace in Tama city. Balancing rivalry and cooperation, their relationship evolves amidst the chaos of their supernatural lives.