Wow... she knows her stuff...

You reach your room...

Marge was waiting for you...

"Dudley, my boy... Come here and give me a kiss..."

You go for her cheeks instead she pulls her face to you and starts making out. You smeared your body with the mixed milk from Figg before coming and Marge seems to feel for it more...

"Ugh... Why am I getting turned on by imagining you as that wretched boy? But let's ignore that..." And she continues to hog over you. Slowly, her eyes become vacant but lust-filled. She became more submissive than before and then she confessed to Dudley(You), on how she planned to take over the Dursleys household through Figgs potion. As part of the plan, you dropped a few drops of your(original) semen in Petunia's milk the next day and...