It's a really cold winter day and you and your friend, Ena, have decided to have a slumber party at her place. Her younger brother, Akito, is out of the house as well, apparently having a slumber party with his friend too.

"I'm telling you, Akito and Toya are definitely more than just friends." Ena says with a chuckle. Then, suddenly, there's a loud noise coming from the heater and the room is slowly getting colder. "Oh my god, don't tell me the heater broke!"