If you liked
Hagure Yuusha no Aesthetica
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...then you might like
Seireitsukai no Blade Dance
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The obvious similarity - Both are harem show. Both involving magic usage. Both have the same setting and also involving academy life!! Both have lots of girl surrounding them!! Both are about a male (main character) who has the strongest magic/power in the series. Both protagonist also capable of using sword to defeat the enemy.