If you’re in the mood for a phenomenally depressing anti-war double bill, follow When the Wind Blows with Grave of the Fireflies, which also revolves around an apocalyptic bombing and a pair of innocents struggling for survival. What’s especially bleak about this astonishing Japanese film is that the innocents are a young boy and his apple-cheeked little sister. With their saucer eyes and their exquisitely observed mood swings, Seita and Setsuko are as lovable as any Studio Ghibli moppets, but instead of contending with the demons and spirits that are Ghibli’s trademark, they are crushed by the horrors of World War Two. First, their home town is razed by American firebombs and their mother is burnt alive. Then they go to stay with a callous aunt who resents them. And after that, things start to get really bad. Unbearable but essential. – Nicholas Barber (Credit: Studio Ghibli)