What is it called?

Ok so I’m trying to remember an asian drama I watched. To be more specific I think it was a movie. The premise was that this girl got a, like, apartment and then it kind of fused with the same apartment only from like 30 or something years ago and now she and the guy who lived therelive together. Also the doors got fused together and it kinda time travel so when one person opens the door it opens to their time and vice versa.