 If you liked
5-toubun no Hanayome
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 ...then you might like
Amagami-san Chi no Enmusubi
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recommended by Haruba Negi, similar premise but instead 3 shrine maidens fight for MC's love. MC is pretty smart, and the 3 shrine maidens are fairly distinct.
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Recommended by rubixuitous
The plot line is more similar than I could cover.
MC is a studious tough guy who doesn't cut slack. Gets involved with a family of daughters-only. A quintuplet in one case and three sisters of various ages in the other.
Author of 5-toubun no Hanayome recommended this too!