If you're looking for a cheap way to permanently damage your psyche, consider Grave of the Fireflies.

Rating: 10/10 (24 August 2014)

This is a film that wastes absolutely no time yanking at the heartstrings. Based off a semi-autobiographical novel of the same name, "Fireflies" tells the story of 14-year-old Seita as he and his young sister Setsuko struggle to survive the final months of World War II in Japan. It depicts war from a point of view strikingly different from western film; there are no heroes or villains, no triumph or defeat, no good guys or bad guys. There is only reality, and a grim reality at that. Two ordinary people tragically forced to live through the terror of a war they never asked for. Seita and Setsuko are not extraordinary. Their story is not one of grand adventure with a happy ending. They are just children dealing with very real tragedy and very real trauma in a very real way. From the opening narrative to the final credits, Grave of the Firefiles drags you on a powerful and emotional roller coaster of a journey and will not stop until the last tear falls. Do NOT let the medium fool you; this masterpiece is powerful and mature, shattering any preconceived notions of what animation is "supposed to be".