Adult Jun Sakurada once refused to wind the doll Shinku's key, and grew up without ever becoming a Rozen Maiden's medium. Years later, he stumbles on a serialized magazine called How to Make a Girl that ships doll parts with every issue, until the run is abruptly cancelled and cryptic messages start arriving from a version of himself who made the opposite choice. To finish the doll he has to enter the N-Field, a hidden realm where the seventh Rozen Maiden, Kirakishou, seals the consciousness of anyone she catches inside white crystals.