Made in Abyss, Yakusoku no Neverland Recommendations
When I watched Made In Abyss in 2017, I found that this anime had a lot of similarities to The Promised Neverland.
First, the characters. Both anime focused on a group of kids who lived in an orphanage. Living in a limited area (as the adults prohibited them to go to certain places) made them wonder, how does it feel to be outside.
Next, the design. Both anime have cute character designs that if you recommend it to someone who just watched anime (or someone who only watches specific genres), they would probably answer "Sorry, I'm not into childish anime". Nonetheless, both anime have astonishing art.
The adventure starts when main protagonists decide they need to see what outside (or "inside" in the case of Made in Abyss). Both have unique kid characters designs and are initially set in orphanages. Escaping turns difficult because it´s forbidden by adults. The art in the manga depict fantastic settings and atmosphere and this is properly adapted in both anime. The story will lead kids into an adventure that, unfortunatly, hold the possibility of damaging their physical integrity.
They want to find out things outside where they currently are from things they heard or saw.
Have a purpose, becomes very dark at some bits.
Fun but deep at the same time.