Еп. 12: Хлопчик початкової школи відвідує сніжних дідуся й бабусю й знаходить таємничу сніжну хату з двоюрідним братом

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)