Billionaire is my puppy

By day, she is Mia Quinn, the most insignificant intern in Stellar Tech's design department, enduring Tristan Hawke's sharp-tongued humiliations—crouching on the floor to pick up scattered sheets of her work. By night, she is the mysterious queen "Mistress S," with a hundred thousand followers, using a voice changer to coldly command the man in a collar on the other end of the video—who calls himself "LoyalHound001"—to bark like a dog.......