ML destroyed FL's family/kingdom

I've seen a lot of dramas where the FL wrongly suspects the ML killed her family/kingdom and a few where his family did, but the ML is always innocent. 

What I'm looking for is something like Moon in the Day (or Goodbye My Princess just with a happy ending) - ML really did destroy FL's family or kingdom and the leads still end up happy together. Any country is fine, I don't care if it's a recent or old drama, just as long as the ending is happy.

Please and thanks!

 Inkling:

i dont remember if its happy ending or not should i still reccomend it? (it's not historical)

That's fine, I can always peek at the end to check. :)

Thank you! :)