Tbh, it was pretty much my case too. When I decided to watch more, I instantly loved it though. I had a few anime like that where I needed to force me a little,
Baccano is the first name which comes to my mind for that matter.
Well for
Baccano, if you know it, it's a little more obvious why, as it is the kind of anime where you begin to watch and you can't really understand a thing but the more you watch and the more you familiarized yourself with the plot, characters, setting, etc. (Also personally what really made me decide, actually was):
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