The Promised Neverland, Vol. 3 Destroy!

The children of the Grace Field House orphanage must escape a macabre fate before it's too late.
Life at Grace Field House is good for Emma and her fellow orphans. While the daily studying and exams they have to take are tough, their loving caretaker provides them with delicious food and plenty of playtime. But perhaps not everything is as it seems...
In order to escape the orphanage where they are being raised as food for demons, Emma, Norman and Ray begin recruiting allies. But convincing the other children to believe them may not be an easy task.