The Promised Neverland Vol 7

The Promised Neverland by Kaiu Shirai. A Shonen manga rated Older Teen, published in English by Viz Media.

Emma, Norman and Ray are the brightest kids at Grace Field House, an idyllic orphanage where they're raised with love until each child is adopted. Then they discover the horrifying truth about where the children really go, and begin planning an escape.