What similarities are you expecting?
like childhood friends to lovers but of of them totally whipped for the other and the other is aware of it.
https://www.mangago.zone/read-manga/osananajimi_ja_gaman_dekinai/
the second couple in https://www.mangago.zone/read-manga/green_apple_paradise/ kinda remind me of them in the sense that they're an established duo that even before they started dating, they just come in pairs. season 2 focuses on them if you haven't read yet~
also just want to say i absolutely loved chorong x naseon too, i reread it just for them
any bls with similar dynamic as the second couple from Kisses x Kiss x Kisses?? it's okay if its a side pair too(gotta take what i can get)