Responses
I think you might be looking for this
https://www.mangago.zone/read-manga/chiguha_kuna_kisu/
Hey, there! I think it could be this one
https://www.mangago.zone/read-manga/blunder_turned_wonder/
the MC has a crush on a girl in class. He somehow got her (wrong) number and confessed his love to her. but then turns out it was her twin brother in the same class. Now they're in a relationship