He blackmailed his own father regularly!

"I blackmailed my dad into firing you so I could get an easy job. You see, I know he´s been cheating on my mom." You stopped him there by pulling away and glaring at him. "You what you little twat!"

He looked up at you scared. "You blackmailed your own father! Because you´re a dumb fucking cunt who can´t do anything properly!"
"Y-yes Sir. I also blackmailed him into not giving me tasks, and increasing my salary."
"And you did this by threatening to expose his unfaithfullness?"

"Yes Sir. Did I do something wrong?" You then realise that there´s still some left of the old Isaac in him. The Isaac that doesn´t see anything wrong with him manipulating his own father. That Isaac needs to be punished.

You yank him up by the scruff of his neck. "Go outside and wait by my bike." He scurries away to you bike while you walk over to the big meeting room where the staff is listening to your old boss laying out the weeks project for them. They all seem a bit surprised to see you. "Ehm, what are you doing here?"

Betting on this worlds rules, you merely state. "I collared Isaac and I´m taking him home." Most of your old workmates don´t seem surprised, most seem quite relieved, especially his father seems quite pleased.

You walk out feeling pretty good about yourself. As ordered, Isaac is waiting next to you bike. You both get on and you drive home to get Isaac ready for his punishment.
"I´m home! I brought a new ****."

You see that Sister Sin have been quite busy. The boxes are still there but now they only contain matching content. Marcus is also out of his latex suit, laying nude on the floor with a large dildo in his ass and a large ring gag in his mouth. He looks at you pleadingly, and judging by the red marks around his face, limbs and ass you guess Sister Sin has been a bit rough in her treatment. Maybe you should discipline her for that, or encourage it.

Nonetheless that´s an issue for another time. She comes out from behind a stack of boxes carrying a large double headed dildo and curtsies when she sees you. "Good day my Lord. May I ask how your trip fared?"

You smile and pull Isaac forward. "It went quite well if a bit unexpectedly. We now have a new **** in this household. I haven´t decided on a good name for him, but since he´s such an asshole I guess we´ll just call him Filth. Dress him up for me, make it as humiliating for him as you can, then bring him to me. I´m taking Marcus up to the bathroom."

Sister Sin curtsies again and then grabs Isaac by the hand and pulls him in behind more boxes and you hear her undress him. you meanwhile ungag Marcus and pulls the dildo out. He thanks you and follows you up to the bathroom, he seems quite tired...