It has been very cold these days in the Aso area, too. We had snow and hail the day before yesterday. It was sunny and cloudy yesterday, but still very cold. The top of Mt. Aso was covered with snown as shown in the photo below.
On a cold day, I want to have something hot. I often have kimchi soup, which not only warms me up but also is very nutritious.
As for heating, I use mainly a kotatsu and seldom turn on an oil fan heater in the daytime and evening.
When I sleep, I'm with two lovres snuggled up to me. They are taciturn, but warm and reliable. The are really good to be with (kimuchi-ii?). They are called "yutanpo."
This heating apparatus is believeed to date back to the seventh century China and it was supposedly introduced to Japan in 1480s.
This heater is very usufel and indispensible to me. As Maria Carey sings in her song Without You,
I can't live if living is without you-tanpo.
