I like corruption but I also really love reverse corruption that turns into a happy ending.
Like a female knight gets captured by a demon sorcerer, and the knight turned into a demon via lots of brainwashing, tentacles, magic corruption, and other hot things that corrupt. The demon knight it sent out to go kill a specific person, a good friend from her old life. But even with her all her power she can't, not out of trying, but the friend is really strong. All the while the friend tries to remind her of who she really was.
Again and again she tries to kill them, always ending the same, as more and more memories try to flood back to her. Until one day they get to close for the fight, and the friend pulls her into a hug, risking their life for her to remember this. She squirms free, but it's too late. Memories of all the time they spent together flood back, and try all she might she can't forget it. She returns the next day, wanting more of the...past life to be explained. From there she acts more like a double agent, but it's more to spend time with the friend. Getting to remember more and more of who she is, and getting to make new memories with the new her. Maybe one day she needs to uh, "release" pent up demonic energy, and requests the friend help her with it. But she severely underestimated them, and found her self getting a exorcism via fucking. She's a demon, yet she was the one getting worn out, tired, brought to the edge of breaking. Nothing could have prepared her for that night
Or the next night
Or the next night
Or the next
You get the idea, it wasn't long until she was fully on the human side again, looking more human. Still, she had some horns and a tail, and was certainly bigger then she was before, but most people find her pretty safe to be around.
But, she still needs an occasion "release" of demonic energy, so there she goes, begging her friend to join her in private for a "session", leaving with a belly bulge of cum, which one day didn't go down all the way.
