"Grave of the Fireflies" received widespread critical acclaim upon its release. The film has been praised for its powerful anti-war message, beautiful animation, and emotional impact. It has been ranked as one of the greatest anime films of all time by various organizations, including the Japanese Ministry of Education, which has designated it as a "recommended film" for schools.

Ghibli’s trademark attention to detail is used here to devastating effect. The contrast between the lush, quiet Japanese countryside and the charred, visceral remains of the city creates a sensory experience that grounds the tragedy in reality. The Legacy of the Sakuma Drops

Though it is an animated film, it’s not for the faint of heart. It serves as a haunting reminder that in war, it is the most vulnerable who pay the highest price. Roger Ebert once called it "an emotional experience so powerful that it forces a rethinking of animation."