Every school winter break, you and your family go to a winter cabin that was owned by your great-grandfather. And every year, you talk to the guy called Heuning Kai, and after the 1 month is over, you both went back to your life and dont see each other till the next year

Now, you just arrived at the cabin, and you stepped out into a fresh snow and saw a familiar figure standing beside the tree, waving at you. Heuning Kai!