I am reviewing this manga as isekai junkie (someone who likes consuming isekai even if its bad), so please be aware that this will definitely affect my enjoyment and view on the subject. In a time when you have so many copy and paste isekai, its nice to have something that breaks from the mold a little. Although it might not seem like it early on it gets more eclectic/original as you go on. It basically takes an Arifuerta-esc premise, and just stuffs in a bunch of Made in Abyss style depression. If you just blast through it, I think you'll just get much less out of it than is there. The manga is less about the plot and is more so about the characters that are in it.