 If you liked
Houkago, Koishita.
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 ...then you might like
Shunkan Gradation
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Both manga series have a little clumsy main character girl as the protagonist. Neither one of the girls knows in what club to join in high school. So they end up doing some club activities they would have never believed they would.
Also, both contain romantic parts, are focusing on high school life and problems, are pretty regular from the main idea but still able convey many feelings for the reader.