Love Game (ohyul x ryul)

Kwon Ohyul, a modern day South Korean prince, has officially sworn off love after his fiancee suddenly leaves him for another man. He decides to stay single forever despite his parents' wishes-until he lays eyes on Kim Ryul. Ryul is the talented captain of South Korea's national football team, who is dedicated to the game but reckless when it comes to relationships. He also refuses to fall in love because of a dark secret he's been hiding for years.

Despite their differences, the two men inevitably cross paths after Ohyul pursues Ryul. Ohyul proposes an arrangement: for Ryul to help him get over his heartbreak by becoming friends with benefits. Ryul agrees simply to stay in good favor with the royals and because he also likes a good challenge. But they both make a promise. They can't fall in love, and if they do-the arrangement is over.