Your brother

You check yourself in the mirror one last time. You look hot. You were considering going naked, but finally you decided on the other course of action. But you don't wear much, just a top from which your breasts are almost spilling out and mini-dress. You don't plan to wear them for long, anyway. You take a last deep breath and you knock on his door.

"Enter" he says

You open the door, he's clearly surprised to see you.

"What do you want, slut?" he asks. He's calling you that regularly. In fact he's exclusively calling you that.

"Excuse me, sir" you say trying to sound as sweet as it is possible "but I wanted to show you something. Can I?"

"Okay, but it better be something interesting" he looks at you curiously.

You put your phone on his desk and play the music you've prepared. You move to the beat, swaying your hips, trying to look as sexual as possible. One glance at him and you know that he likes that. You slowly take off your tank top and now he has your breasts on full display. But you don't stop moving you slowly walk towards him while taking off your dress. Now you are only in your panties, you sit on his knees and plant a kiss on your brother's mouth. He let's you do it.

"Please, take me, sir" you whisper into his ear.

You don't have to tell him twice, he impatiently starts to undress and immediately after that he throws you on his bed. You predicted that it will go like this so you are prepared, you'll feel him inside you in a moment. Ten days ago it would disgust you, but after what your father put you through it is nothing.

"Oh yeah, I wanted it...for so long."

He improved his stamina in the last few days, but still it is his first time and he is inexperienced. He is too impatient, his moves are too rash and he cums quite quickly. But you learned your lesson, you don't try to humiliate him.

"Oh sir" you whisper "it was so good. Your slut love feeling of your cock inside her. Can we stay like this a little longer?"

"My slut?" he looks at you with a goofy grin on his face.

Bingo! Time to set him up against your father.