Before you could plan..

There was a knock on your door, you wonder who it is. You walk up and open the door to see a disheartened Petunia.

"Hello Harry, I will be going out for a while. Can you go to Mrs Figgs place for the moment? Take Dudley with you as well, although he would hate it. I'll be back in a few hours."

"Uh, sure Aunt Petunia."

You then call up Dudley and start going to Mrs Figg's place. It has been a while since you have met Mrs Figg. She helped you well in beating your meat at night. Dudley being next door also enjoyed the same hence the fetish for his mom began and grew. Dudley was excited to meet Mrs Figg and you can see his bulge on his pants.

You walk up to the door and ring the bell. Mrs Figg comes out. She was the same as Harry saw her years back but looked somewhat younger.

"Oh, Hello Harry, and I see that you have brought Dudley as well. Come in"

You both usher in and you were sure that Dudley brushed himself on Figg because he lingered for some time as he passed Mrs Figg. Mrs Figg didn't bother at all as she fixated on you.

"Dudley, why don't you watch television at the moment and Harry could you be kind enough to help me in the Kitchen?"

Dudley looked at you earnestly and immediately kept his head down. He said he would do anything for Harry unless he gets Petunia and tonight was his chance. You understood that and you agreed to help.

As you walk in the Kitchen, Mrs Figg shut her door and began transforming.

You instinctively take out your wand and point at her.

"Who are you and what have you done with Mrs Figg..."

"Harry, it is me. Mrs Figg. I know it is shocking but I will explain in due time. Besides, since your curse is still on you and I thought it would be better if I transformed to this muggle to grasp your attention."

She was right. It worked. You stuff your wand back and you sit on the kitchen counter.

"It seems that you were about to try on the Dursleys but you still couldn't figure out what to do with your new type of cum. I can you in scoring with your aunt faster, but I believe I can't involve myself until you finish a part of your conquest. The reason why I called you is that I'm obligated to do so. I was bound to serve you until you find the origins of the curse that was cast on you after the Battle of Hogwarts. The reason why I was able to shapeshift is that my breast milk has seductive properties but in turn would allow me to transform into them. Your Aunt Marge was one of my clients, and I do not know what has happened to her since I can't transform into her. Now onto the most important part: Your cum, Harry, is the secret that makes it easy for you to dominate whomever you wish. In this case, your wand can only assist you and your cock is your greatest weapon. You can make your targets susceptible to you alone either by ingestion or indirect contact in form of drinks, lotions, etc. I apologise for not helping you from the start but I was bound not to do so. Do you have any other questions, Harry?"

"By serving me, does that mean--"

"Yes, I will be part of your harem. Another thing you need to note is that unless you shoot inside at least once in your target to make them a part of your Harem. Also, should you shoot in me this time you will be able to use me anytime to transform into any members that you have brought in your Harem, which may include Petunia if you had done so. Besides I feel that your cousin has the hots for me. Shall I make him mine so that you can go for Petunia alone?"

You are now faced with a choice but you know what you have decided.

"Mrs Figg, he is helping me in my conquest. Besides he made a blood contract that he will serve me until he sleeps with his mother. Fortunately, that idiot said he would have her in any form meaning he would fuck Petunia even if it was a ghoul transformed into her."

"Hmm, I believe the smarter choice here is to make me change as Petunia and let the boy have his fun. Plus he can have me whenever he wishes until you corrupt Petunia. But first, you need to make Petunia drink my milk. Here, I have a bottle near me. Before you leave, I have a reward for you as well.."

"Make it quick and I'll convince Dudley to stay at night... once he is done come to me as soon as possible. I need more of you plus I can change to whomever you want, even that chick in the metro station..."

You can't deny a free pussy so you start ravishing her as fast as you can.

You then proceed to dupe Dudley. What do you tell him?