 If you liked
Houseki no Kuni
|
 ...then you might like
Ginga no Shinanai Kodomotachi e
|
A post-humanity Earth is inhabited by immortal humanoids who spend their days idling in thought. There is a parent/mentor figure who looks after immortal “children”, and has destructive powers for an unknown reason. The protagonist is a naïve and curious girl who likes to explore.