 If you liked
Keppeki Danshi! Aoyama-kun
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 ...then you might like
Shinchou Yuusha: Kono Yuusha ga Ore Tueee Kuse ni Shinchou Sugiru
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One is a sports anime, the other is isekai - but they have one important thing in common: Seemingly perfect and overpowered main characters with one "little" obsession that turns everything hilariously upside down. Both the MCs have important things they need to achieve, but no matter what their strange obsessions are top priority in every single situation they end up in - and hilarity ensues. In short, if you enjoyed the comedy in one of them, you'll almost definitely enjoy the other one too!