I'm looking for manga/manhwa/manhua stories that have intense drama and kind of long burning romance. My best comparison would be like the conclusion of the Violet Evergarden movie. Something like the 2 have really wanted to be together for years but have serious reasons that they can't. They go through a lot until they can be together. Hetero/BL whatever.
Preferably no NTR.

It has to be complete. A story like that with no ending is just torture.

Basara was kinda like that

Thanks!
I'll give it a try.

Bokura ga Ita maybe? They start dating quickly but then split up and there’s a lot of drama before they ultimately end up together.

Thanks for the suggestion. I've read that one. It is good.