Grave of the Fireflies (1988)

Fireflies is an immensely powerful story of two siblings, a teenager named Seita and his baby sister Setsuko, as they struggle to survive during the attacks on Japan during World War II.
Their relationship is the heart of the film; it's a heart that beats in defiance of adversity because it's fuelled by love and family values. The responsibility placed on Seita could crush even the strongest adult, but his feelings for his sister keep him focused and determined.
For a film that's built around tragedy, there's a lot of joy and beauty to be found in the subtext.

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