 If you liked Sidonia no Kishi |  ...then you might like Houseki no Kuni |
Oddly similar, both have post human characters with unique conditions. In both stories the MC starts off naive, under the guidance of a benevolent authoritarian, but starts to become more skilled and uncover more about their surroundings/situation. Both stories manage a large cast of important side characters very well. Both have the feeling of being aboard a 'ship' - a self-reliant, self-sufficient, but isolated group where each member has an important role to play. In both stories the personalities and actions of the characters have a very direct and severe impact on the trajectory of the story itself - the characters drive the story more