- Main article: Gleipnir
The cathedral is protected by a set of over thirty autonomous spiritual items, based off the dwarven-forged chain used to bind Fenrir until Ragnarok in Norse mythology and fashioned out of magically manufactured steel into a variety of animal-related shapes. These spiritual items will respond to the presence of an intruder and intercept them.
Toaru Majutsu no Index SS: KanzakiEdit
- Main article: Toaru Majutsu no Index SS: Kanzaki