Yakusoku no Neverland

The children of Grace Field House live what seems like an ideal life under their caretaker Isabella: good food, lessons, games, and a large family that lacks for nothing. Then Emma and Norman discover that the children who leave for "adoption" are not going to new homes at all, and that the orphanage has a horrifying purpose. With Ray joining them, the 3 oldest children begin planning an escape from a place designed to watch and control them. Their goal is not merely to flee, but to save every child without letting Isabella realize they know the truth.