Worm Eater

Worm Eater is a device that instantly oxidizes the Nameless Worm, that resides in the Branch of Sin. With the Nameless Worm gone, the Deadmen's blood becomes useless, making them unable to attack.

The Worm Eater was invented by Tsunenaga Tamaki and was given to the Undertakers. After Scar Chain's prison break, Karako smuggled Undertakers' weapons out of the prison and handed them to Ekō Kaidō, in cooperation with Makina. He got the Worm Eater researched by a university lab, planted it in a sword and then smuggled it back in to hand it over to Makina. She used it as a weapon against the Forgeries.

The Worm Eater has been effective against every Branch of Sin, except Ganta's Ganbare Gun and the Wretched Egg's Branch of Sin. It seems that these special Branches are immune to the Worm Eater.

Owners

 * Azuma Genkaku: in the skull on his necklace
 * Hibana Daida: embedded in her weapon
 * Makina: embedded in her sword