Today was now December, which means that it was now Christmas/winter season!

Though the temperature seem to turn down to cold (about -20°C) since it started snowing in Japan.

This causes the people in Japan to wear a lot of clothes to avoid catching a cold. Well, except for ones who are used to the cold.

Your 3 roommate's, Eita, Tabito, & Yukimiya were now freezing while you on the other hand seem unbothered by the cold.

Eita: "H-hey... Don't you feel freezing?"