 If you liked
Tate no Yuusha no Nariagari
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 ...then you might like
100-man no Inochi no Ue ni Ore wa Tatteiru
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These two anime I would say have quite in common. While starting with the obvious that they are both Isekai they also tend to be on the darker side of that genre. Making it intriguing since most anime like them normally starts with a lighter theme. They also have a similar protagonist as it looks at first like they couldn't care a bit about the world they entered and both have questionable values that we as a viewer tend to question our own morality after.