Raina

Raina is Adlet Mayer's best friend.

History
Raina and Adlet were best friends. Since they were the only boys in their village, they decided to become their village's defense force, even though Adlet wasn't interested.

Raina later becomes a corpse soldier in the novel and is unable to move his body as he is under the control of one of tgurneu's minions however  one of the saints allowed him to maintain his sanity and mind, and for a short period of time he could move his left hand momentarily and so he carved into his skin that he was alive.