THE DEMON GIRL NEXT DOOR

When Yuuko Yoshida wakes up one morning to discover that she’s sprouted horns and a tail, she learns something that her mother has been meaning to tell her. You know that battle between the Light and Dark that’s been going on since the dawn of time? Well, Yuuko’s family are the bad guys. So now, Yuuko has to defeat a local magical girl to win back some of her family’s vanquished power so they can afford to go to the all-you-can-eat pancake restaurant. And, of course, it turns out that the Magical Girl goes to Yuuko’s school, but Momo’s really nice and keeps rescuing Yuuko, which is pretty embarrassing and leaves Yuuko rather conflicted… but… all you can eat pancakes? (Source: Sentai Filmworks) — Description from AniList community (anilist.co).