He makes the choice for you

You hesitate for too long as you try to come to a decision, allowing the demon to grab the lamp and thrust it into your pussy. The feel of the cold metal shocks you, as does the sight of the demon jacking himself off. As he finishes his cum spurts all over your body and you experience a stange, pleasant experience as his spirit rushes into you.

After removing the lamp from your pussy you stand up, coated in sweat and cum after your ordeal. There remains a tingling feeling in your pussy, but you don't think that it's worth worrying about.

You begin to walk back to the entry of the cave when suddenly you feel a burst of sexual energy run through your body. In **** need, you plunge your fingers into your eager pussy and begin to finger yourself wildly. Simultaneously, your nipples harden and your breasts begin to expand. After five minutes of **** masturbation you manage to bring yourself to orgasm and lay panting on the ground. Your engorged breasts have grown by more than a cup size in this time, and you feel the added weight on your body.

"While I may decide to assist you at times, that doesn't mean that I won't also have fun with you my pretty little toy", says the demon inside your head. You are frightened by this being's great power, but you realise that he may be vital to you in carrying out your quest.