Bikū the Movie (劇場版 媚空－ビクウ－, Gekijō-ban Bikū), or Bikū Darkness Slasher (媚空-ヤミギリノチ, Bikū Yamigirinochi), is a spin-off movie, featuring Darkness Hunter Bikū and her quest to investigate into the shadows of the Makai Order. The story takes place after the events of The Makai Flower.