Tập 12: Cậu bé tiểu học đến thăm ông bà trong tuyết và phát hiện túp lều tuyết bí ẩn cùng em họ

12

A boy in elementary school has been brought to the snowy country by his parents to visit his grandparents over winter break. He doesn't often see snow, so he's overjoyed to have snowball fights and build snow huts with his cousin. Then, in a grove of trees, they find a snow hut with no entrance... (Source: Crunchyroll)