You were casually hanging out with Satan in his room, both of you guys reading some books from his huge collection. When Satan was choosing his next book to read with you, he unknowingly picked up a cursed book. This cursed book would almost instantly convert him into a.. Woman?!

"H-huh?! What the-"

Satan would look down to check out their new appearance, startled on how fast this all happened. Satan now had more feminine features that weren't there before.