Last man on earth when there is no earth?

Ch 6.6

“Guess it's really not a good time after all." said Iris, her back turned to me as I sit there with my shorts off still holding my meat in my hand.

I was in the middle of the… what round was it again? When this parasite of a ghost suddenly manifested. I expected her to scream or get angry but all she did was turn around and float away.

I sighed, then removed all my clothes and opened the water. After another quick shower I hesitated about returning to the room knowing that even if I use the sofa I probably won’t be able to sleep at all so I sat down in the tub, hugged my knees and thought about pointless things. 

And? Where have you been all this time?

"Asleep." She said. I found it hard to believe such immediate reply. "I don't know why