 If you liked
Saiki Kusuo no Ψ-nan
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 ...then you might like
Kuroiwa Medaka ni Watashi no Kawaii ga Tsuujinai
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The main girl character is the most popular girl in school and everyone fall for her, except of course the protagonist who ignore them, so it became the girl solely mission is to make them fall for her.
that is the main focus of the Kuroiwa manga, where in Saiki it is a part of it.
But if you love the relationship between Saiki and Kokomi, you will love it between Medaka and Mona.