18if is a Japanese anime television series produced by Gonzo. It aired from July 7 to September 29, 2017. It is part of the media franchise The Art of 18, which also includes a smartphone game by Mobcast titled 18: Kimi to Tsunagaru Puzzle (【18】キミト ツナガル パズル, 18: Kimi to Tsunagaru Pazuru) for Android and iOS. Haruto Tsukishiro wakes up in a dream world dominated by strange and powerful entities called "Witches". To survive, he gets the assistance of research professor Katsumi Kanzaki and a mysterious white-haired girl called "Lily". With their help, Haruto must outsmart the witches and find a way to return to the real world.