Romance manga with little to no comedy?

I originally made a post wanting drama/tragic romance but I’d like to open my recommendations to a broader scale. However, I want a happy ending!

Do you have any romance manga that doesn’t have a lot of comedy? Some comedy is fine, but I don’t like it being the main focus.

I don’t care if it’s generic romance, as long as it’s good/cute/you get the gist! Again, make sure it has a happy ending. You can recommend tragic endings, but please clarify beforehand.

No yaoi, but yuri is fine. Adult is fine. No love triangles.