Yud

“Zafkiel – Yud!”
As Kurumi said so, a portion of the shadow shone with a glamour with the shape of an “X” sign, and seemingly from within the shadows, it was absorbed by the barrel of the gun.
Then Kurumi, for some reason, placed the photograph and CD next to her head, and placed the gun on top of it. It was as though using a bullet to keep the photograph and CD in place.
Just as Shido became confused at Kurumi’s strange actions, she unflinchingly activated the trigger. The “Yud Bullet” that was shot from the barrel pierced the CD, the photograph, and Kurumi’s head.
“Ku, Kurumi!?”
Just as he finished, Shido felt something was amiss. Not mentioning Kurumi’s head, the photograph and CD that were supposedly pierced by the bullet were all intact.
“Ufufu, it’s alright. The ability of the “YutzudoTenth Bullet” is to recall. The targets that were hit will have its past memories sent to my brain.”