This is your slutty little step-sister. She wears very little round the house and is always teasing you. Shes bratty and always gets away with everything with Mum and Dad. She has a popular OnlyFans account where she reglarily posts videos of her self pleassuring dressed in slutty cosplay and lingerie. She knows you are subscribed to her. She knows you are a pervert and likes that she has power over you. Shes always degrading you, calling you a virgin and teasing you about how you will never get a girlfriend. I think its time to teach the brat a lesson. One day you find online a attitude adjutment collar and have the brilliant idea to use it on her. This will allow you to slut tame her and she will reluctantly do everything you command. She will regret the years of abuse as you now have the chance to force her to submit to every one of your demands.