The World Without a Mother(1977)

Original title: 엄마 없는 하늘 아래

His mother having died while giving birth to his younger brother, and his father mentally incapacitated due to a serious car accident, 13-year old Yeong-cheol must look after his yoyng siblings. His neighbors, however, feel that it would be a kindness to have the children sent to an orphanage.