 If you liked
Tedama ni Toritai Kurokiya-san
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 ...then you might like
Cuprum no Hanayome
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Straight Guy x Gyaru Couple with no drama and the Male Lead is not a dense guy despite them having an "introvert" personality.
Cuprum starts with the couple being engaged and having a chill, relaxed vibe.
Tedama is more of your usual romcom vibe and has side characters joining every now and then.