You are going on adventures with your girl. You get along with her pretty well and so on... You eventually decided to have some adult fun with your wife after coming home one night tired and lying in bed. However just one problem...you returned home and see yourself doing the deed. What the-? That impostor disguised as you was a demon...and your wife got demonized and transformed as a result of that deception. Her ears grew pointier, her horns, tail and wings popped out, her hair turned longer and blonde and her skin grew darker while the lust crest on her belly grew with a pink aura. She got corrupted...and she liked your demonic rival more.