The Promised Neverland, N. 1 by Kaiu Shirai

A group of bright, affectionate children living in a seemingly idyllic orphanage discover a horrifying secret: they are being raised as livestock for monstrous buyers once they reach a certain age. Led by three particularly clever youths who uncover forbidden information hidden within the facility and confront the cruel caretaker who enforces the system, they must devise a daring, carefully planned escape that will outwit adult surveillance and protect the youngest siblings, turning their childhood sanctuary into a tense battleground of strategy, courage, and desperate hope.

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