The morning forecast said it would be warmer than usual, but it turned out to be a huge mistake, and Chika and Ryuta went out in light clothing, leaving them freezing on their date... When they got home, the air conditioner broke down, it took a long time to heat up the bath, and their bodies got even colder. Then Ryuta suddenly said, "If you get lost in the snowy mountains, it's a good idea to hug each other naked!"...?!