 If you liked
Jinrui wa Suitai Shimashita
|
 ...then you might like
Shingeki no Kyojin
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The two series deal with how mankind deals with 'new' humans. Food shortages, struggle for survival and despair are overarching themes.
Where as Titan tells a gritty shounen tale, Jintai presents a cheerful face that may appear childish but belies a very adult level of cynicism. There are strong parallels to be drawn between the two when homo sapiens no longer become the predominant species.