I'm sure there are several out there like this, but Gentle Forest was the first that I thought of at least. https://www.mangago.me/read-manga/gentle_forest/
Star struck.
Homerun hearts
Oh wait I just saw friends to lovers trope. Sorry. But they are good reads anyway.
Omg finally yeah it's gentle forest
Glad I could help! I got a bit unsure about it myself after posting actually.
Thanks i will check these out too
I'm searching for a friends-to-lovers BL manga/manhwa where the uke has a weak heart, their fathers are really good friends (so the seme and uke have known each other since childhood), the seme is maybe an athlete, and when the seme got a vacation, the uke met him for the first time