Norman the Snowman: Kodomo-tachi no Hitotsuboshi

Synopsis (en anglais)

The boy has grown into a young man, living apart from his mother. Although he returned to his hometown, he is unable to be honest with her. After reuniting with Norman, a mysterious child searching for "snow flowers" suddenly appears before them. Norman and the young man venture into the snow-covered forest with the child. (Source: Official site)