Heir's Game

 is a Drama Webtoon Original created by suspu; it updates every Monday.

Synopsis
''When a new heir to the duchy of Belluna comes of age, there is held the Heir's Game: a brutal series of duels to determine the heir's bodyguard. When Theuden, the new heir, meets Isran, a quiet duelist with a mysterious past, their love will threaten to change everything.''

Related

 * ShootAround: Same creator