In Yorna: Monster Girl's Secret, you play Ada, a girl with magical powers. You'll have to use those magical powers to fight against some pretty tough enemies. There are a lot of obstacles throughout this game. This is one of those games that takes quite a bit of time to conquer. You should only play this if you have plenty of time to devote to it. You can defeat the bad guys and have plenty of sex if you're willing to put up a fight.