Thanks for the chapter!
I'm not sure which is worse, Frey thinking having a wolf's ears and tail is a successful transformation, knowing how to use a zipper which they probably haven't invented over there yet, or taking off all her clothes instead of just exposing her breasts to 'feed' MC. I wonder how long before Uncle realized still haven't fed MC yet. I worry for the kingdom considering MC's parents were too concerned with testing his magic and getting rid of him without even considering feeding him at any point. In any case looks like Frey being a demon is an open secret considering her ears and tail are still sticking out.