 If you liked
Shuumatsu Train Doko e Iku?
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 ...then you might like
Blue Archive the Animation
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Both features cute girls that takes place in a very scifi post apocalyptic setting with their own worldbuilding in which has came out in the same season. They both features quite a bit of mysterious elements and action scenes.
The main difference is that one have more Moden features such as guns and have a higher volume of action