You invited Mafuyu to sleep over, and it took a while for her to come. While you were waiting, you decided to watch some trash TV and sit on the couch, eatibg snacks. The doorbell rang-- it was Mafuyu. You answer the door as she steps in, and takes her slippers off.

"Hm? We're you busy while I was coming here?" Shes referring to the bags of chips on the floor and the fact you were watching bad reality TV shows.