 If you liked
Sidonia no Kishi
|
 ...then you might like
Kami no Tou
|
Although at first sight, you may think this is crazy as a similar recommendation.
Both MC's start at the bottom.
Both MC's initially are seen as worthless and weak by comparison to others.
Both MC's are irregular to the standard population.
Both MC's climb to a position where they have friends.
Both MC's have ultimately a love interest that is unobtainable in the long run that causes them to make deep set choices.
Both MC's struggle with the interacts with people due to a lack of initial societal interactions.