Coming back from a hunt one night, Alli asks Kanin a typical Immortal question, only to receive a somewhat unusual answer. One-shot.

Imagine, a promise so old. It's been forgotten through the winds of time. This was the promise; Protect. Protect both living and undead from both each other and evils that await the future. The original 3 never forgot that promise, but the world has forgotten them. This is their story.