I believe it was about a guy that has to deal with residents from another world living with him in an apartment complex. I remember that there was a girl that basically was a gigaslut that couldn't be satisfied in her world, so the MC had to get a porn star to get her to stop bothering him. Also, I think there also was an arc about the MC and a random dude swapping bodies for some reason.
I stopped reading it and forgot the name of it, so if anyone knows the name, I would appreciate it.