The Promised Neverland, Volume 8 of 20 (by Kaiu Shirai)

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... As Emma and Ray head to a location called Goldy Pond, they find themselves completely surrounded by man-eating demons. Can they escape these hellish circumstances and reach their goal?