Tycoon in Disguise: The Deliveryman Above Them All (Dubbed)

Andrew Finch hides his billionaire identity and works as a delivery driver. One day, while out delivering, he accidentally sees Nadine Royce bathing and is confronted by a security guard. The next day, Andrew meets Nadine again and casually helps her resolve her company's financial crisis. This changes Nadine's initial impression of him. She thinks that, although Andrew is older, he seems like a reliable man. So, she asks him to pretend to be her boyfriend.