Talk:Monster Girl Quest: Paradox/@comment-25786205-20170701164201/@comment-29954782-20170701164548

After you beat the game, go back to the ruined town near the fourth tartarus. You can now enter the building using the cardkey you got during the ending events. At the top, you'll fight Cirque de Croix (minus Alice XV for obvious reasons) and after you win, talk to each of the 6 zombies that Croix leaves behind (which includes Ferdanandez) and they'll join.