月刊少年エース
"Ga-Rei" was published by Kadokawa Shoten in the shōnen magazine "Shōnen Ace" and was collected in twelve tankōbon volumes. In addition, a single volume side-story manga titled "Ga-rei: Tsuina no Shō" was also published by Kadokawa Shoten in the shōnen magazine "Shōnen Ace". In Europe, the series was licensed by Pika Édition for France, by Planet Manga for Italy and by Tokyopop for Germany. Kadokawa Shoten has then made the digital English version of the Manga available on BookWalker.