Made in Abyss: Retsujitsu no Ougonkyou

This is so simmilary like in the view you can see in another part. Likely in "capital of the unreturned" When i see this scene. I remembering this anime. With a myth, ghost, humanoid, strange entity. With a interaction like normal day. So and that. There is human come in the another world. The world is so strange, and may be look it good, or not hopelyful good, right? And a one little girls take in the world, eventhough in Made in abbys the girls not alonely to world. Atmosfere same too. The world have rule that you can returned again anymore (expect is miracle) idenitity and transformatin from this character mostly have in same. Sacrafice and changed people in story mostly same read more 

Both Made in Abyss and Takopii no Genzai may seem cute at first glance, but they are actually quite dark and psychological anime. The contrast between the sweet art style and the heavy, sometimes disturbing themes makes the story more striking. Made in Abyss leans more towards the fantasy side, while Takopii no Genzai is more realistic and closer to everyday life. I think those who like this one will also like the other one 

The series that makes me puke and vertigo, but Made in Abyss is the next level shit 

Both shows deal with the characters traveling to some of the deepest levels of the mysterious dungeon/abyss of their world to unravel their secrets.