Vampire Marguerite and Inedible Neighbor

Kyuuketsuki Maruguritto to Kuenai Gokinjo; Vampire Marguerite and Inedible Neighbor; Kyuuketsuki Marguerite to Kuenai Gokinjo; Vampire Marguerite and the inedible Neighbor; Vampire Marguerite and the Neighbor she can't eat; Вампирша Маргарита и несъедобные соседи; 吸血鬼マルグリットと食えないご近所

After being adopted by a new foster family, Sophie and Benjamin, two lonely siblings, discover the wreckage of an ancient mansion during their explorations. Is it possible that the vampiric landlady of the property will agree to meet them?