Can't afford to pay for the takeout? Stunning CEO: Then pay with your body!

(System, single woman, living off a man, female lead falls in love with male lead at first sight)
On a rainy night, the takeout order spilled.
Zhang Yan forced himself to knock on the customer's door: "Um... I'm sorry, the soup spilled. How about... I buy you a bowl instead?"
The stunningly handsome CEO leaned against the door, tilted his head, and smiled slightly: "Alright, then come in."
[Ding! Host is facing a chastity crisis. The Perfect Life Assistance System has been activated!]
[New player gift pack has been distributed: Master-level home-style cooking (proficient)]
Zhang Yan thought it was payment in kind, but it turned out he was forced to... give his lower body to the president?
……
later.
Zhang Yan stared at the enormous wealth and god-level skills displayed on the system panel, lost in thought:
"Wait... I just deliver takeout, how did I become the world's richest person?"