Commissioned: Failed Summoning 2 by Doc000 (Patreon)

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Second and possibly last page of this sequence (Doc is on hiatus). 

The elf mage could not stop the joining. More and more of the demon's essence poured into her body, transforming it into the demon's own image. Her skin turned leathery and dark red, and her breasts expanded and tore free from her top; all that remained Elven were her arms and head.

The demon cackled as she could feel HER new body reacting to her control, passion rising and exciting her newly made flesh. It had been so long, the sensations were so great: it didn't take long for her nethers to reach climax!

The mage reeled from the orgasm, so intense it was that she no longer cared what fate befell her, content to swim in the pure pleasure flooding her psyche.

Once again in female and futa versions, choose whichever you fancy most!