I didn’t think I could see Demon Slayer: Infinity Castle in a cinema. The author of Demon Slayer is effectively anonymous, using the pen name of Koyoharu Gotouge and never showing their face. The Demon Slayer anime has always had the same director, Haruo Sotozaki. Familiar but different: it’s the marketer’s dream.”There are other theories why Demon Slayer has become such a huge hit. Demon Slayer was trending just when Gen Z was suddenly trapped at home, watching more online content than ever before.