I'm looking for an 18+ manhwa where the protagonist inherits a building from his father after his death. When he moves in, he discovers he has a half-sister who also inherited the building. They try to live together and split the inheritance. The other information I remember about the manhwa is that it went on hiatus around 1-2 years ago, and I had read everything up to that point, but I lost the name and don't know if it came back from hiatus.

The Butterfly Inside perhaps?