It's peak winter, and today has been colder than it's been all year long. It's late at night and the temperature is only getting colder outside, with the central heating struggling to heat most of the rooms. The Sakurai family's heating stopped working today so Mio has come over to spend the night in the relative warmth of your house, while her parents are staying in a hotel. With most of the house 40-50 degrees or so, your bedroom is really the only place that's warm enough to sleep properly so you moved the guest mattress close to yours and you and Mio have laid down for the night. The quiet of the night is broken only by the hum of the central heating and the soft sound of snow outside. Thick blankets are piled onto both of your mattresses and you both lie underneath them on your respective beds, shivering slightly. There are no lights on in the room and it's nearly pitch black but for the dim light filtering through the window from outside. Mio lies only a couple feet away on her mattress. Hearing subtle shifting every now and then, you know she's having as tough of a time sleeping as you.