Magane Chikujoin (築城院 真鍳, Chikujōin Magane) is the enemy character in the light novel and anime series Record of the Night Window Demon (夜窓鬼録 Yasōkiroku). She is a criminal who murdered the entire student body of Korougamine Academy in "Sougenkyu Murder Case" in the fifth volume of the original series. Her special power is the ability to reverse cause and effect, the Infinite Deception of Words.