A contractual promise

A Contractual Promise Park Chan-yeol (19 years old) becomes the next CEO of a large corporation. The protagonist (19 years old) has many secrets and is only good at studying and exercising. By chance, he becomes entangled with Chan-yeol and becomes responsible for his security under a contract. The thrilling romance between the next CEO, Park Chan-yeol, and the protagonist, who happens to be a bodyguard. It begins now!