The choice is taken out of you hands.

As you continued to thrust into Maggie's sopping wet cunt, you heard a familiar voice within your mind. "While I understand your trepidation," Mistress Verda said to you. "I cannot say that I am not a little dissapointed." You suddenly felt yourself pull out of Maggie's pussy against your own will. "I had thought you would be more tenacious. No matter." You found your hands spreading the magikarp's ass cheeks apart, and as you gazed at Maggie's puckered asshole, your hips lined up your cock with that tight entrance. "If you will not sieze your destiny, then I shall sieze it for you!" And with that your body buried your cock deep into Maggie's tight asshole.