seduction of the CEO

She didn't mean it, really. She just got drunk and accidentally had sex with a man. But not only did she lost her virginity...... She had to pay him 10 thousands of dollar.!
What? It's obvious that that he took advantage of it. But why didn't he refuse it? And made her sign unequal contract to pay off. Does he want to play hidden rules?
Even nitpicking on her, saying that her work is not passable. Wants her to work over time, oh man, how many tricks are up in sleeves.