The Male Leads Are Trapped in My House

I reincarnated as the heiress of a mega-rich family from a novel. The problem is, this world is doomed to be destroyed soon by monstrous viruses.

With nothing left but money, I quickly bought a mansion in the countryside and started building a shelter to escape the monsters… But the world ended way sooner than I expected!

On top of that, somehow the male leads got trapped in my house with me. The problem? None of them seem to have any intention of leaving. Why does it look like none of them are even thinking about going to the female lead?