It’s a revenge fantasy about a deaf assassin… It’s a cocktail of anime action, Looney Tunes comedy and video-game violence… A dystopian satire and a psychological coming-of-age story… It’s Crank in The Hunger Games. It’s The Raid playing Fortnite… Luckily, director Moritz Mohr didn’t have to pitch Boy Kills World to anyone – he just skipped straight to making the trailer himself.