Well, then, that's that. He has no clue. Scar sits more upright.

"The right arm my brother gave to me. He branded it with a transmutation circle capable of creating the Philosopher's Stone, thus it could perform alchemic deconstruction. If that is what you're referring to, I lost both arms shortly before I died. Then, I awoke here, only myself."

The naked skin still startles him. It could be simultaneously a day and a lifetime, since then.

"The thing that keeps us here does not heed death."

There's a thread of something deeply conflicted, there.