Yakusoku no Neverland

From Viz:
Emma, Norman and Ray are the brightest kids at the Grace Field House orphanage. And under the care of the woman they refer to as “Mom,” all the kids have enjoyed a comfortable life. Good food, clean clothes and the perfect environment to learn - what more could an orphan ask for? One day, though, Emma and Norman uncover the dark truth of the outside world they are forbidden from seeing.

Note: The most notable award wins and nominations follow.
Won the 1st Annual Tsutaya Comic Award for Next Break Division in 2017, the 63rd Shogakukan Manga Award for Best Shōnen Manga in 2018 and 20th Sense of Gender Awards Grand Prize in 2020. Nominated for 10th Manga Taishō in 2017 and 2018, the 23rd Tezuka Osamu Cultural Prize in 2019 and the 25rd Tezuka Osamu Cultural Prize in 2021 and the 52nd Seiun Awards in 2021.