 If you liked
Made in Abyss
|
 ...then you might like
Soukon no Shoujo to Sourei no Tabi
|
Both are adventure centered fantasy stories. By the end of the first chapter establishes the setting and introduces the character and her goal. Both main characters want to find their parent(s), so they take up their parents' work at a young age. Both have exciting and dark undertones to them. If you are not comfortable seeing children suffer, do no read either.