The Ancient Curse Only His Three Stepsisters Can Break

Yuu moves in with his three stepsisters Kyouko, Ryouko and Anzu at their father's house while he is away on archaeological research. Exploring the room, Yuu accidentally opens an ancient box that places a curse on him, demanding he collect a girl's essence to break it while the girl who provides it receives a wish in return. With nowhere else to turn, Yuu realizes his three stepsisters living under the same roof are his only option.