 If you liked
Mahou Shoujo Madoka★Magica
|
 ...then you might like
Koe no Katachi
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Different genre (PMMM is about magical girls, Koe is a slice of life drama), but both have the same protagonist who is suffering because of their foolish actions.
Both have intense and serious subject matter, despite both having a "lighthearted" artstyle, although PMMM has more violence.