I would say this is an emotional movie, I downloaded and watched the dubbed version (I still have it on my external drive) 
a Studio Ghibli theatrical feature film
Music Video - Our Farewell
(the video is ripped portions of the subbed version)
Grave of the Fireflies (火垂るの墓, Hotaru no Haka?) is a 1988 animated film written and directed by Isao Takahata.[1] This is the first film produced by Shinchosha, who hired Studio Ghibli to do the animation production work. It is an adaptation of the semi-autobiographical novel of the same name by Akiyuki Nosaka, intended as a personal apology to the author’s own sister.
Roger Ebert considers it to be one of the most powerful anti-war movies ever made. Animation historian Ernest Rister compares the film to Steven Spielberg’s Schindler’s List and says, “it is the most profoundly human animated film I’ve ever seen.”[2]
Taking place toward the end of World War II in Japan, Grave of the Fireflies is the tale of the relationship between two orphaned children, pre-teen Seita (清太) and his young sister Setsuko (節子). The children lose their mother in the firebombing of Kobe, and their father in service to the Imperial Japanese Navy, and as a result are forced to try to survive amidst widespread famine and the callous indifference of their countrymen, some of whom are their own extended family members.
Story origin and interpretations
The story is based on the semi-autobiographic novel by the same name, whose author, Nosaka, lost his sister due to malnutrition in 1945 wartime Japan. He blamed himself for her death and wrote the story so as to make amends to her and help him accept the tragedy.
Due to the graphic and truly emotional depiction of the negative consequences of war on society and the individuals therein, some critics have viewed Grave of the Fireflies as an anti-war film. The film focuses its attention almost entirely on the personal tragedies that war gives rise to, rather than seeking to glamorize it as a heroic struggle between competing ideologies.[3]