Original by Tumorhead at http://www.furaffinity.net/view/15586425/
The story behind this commission was that Victor (the lighter creature) was being tempted toward evil by the demon Gilrandree (dark figure, me of course :) ). Gil succeeded in convincing, somehow, Victor to take a life, the scene set just after the killing, Gil looking victorious, Victor horrified by what he'd just done.
Victor belongs to Aikenwolf