The Boundary of Preference

After secretly loving his high school best friend and roommate for six years, a young man discovers his crush has a taste for BDSM. Hoping to find a way to win his heart, he visits an SM bar but nearly falls into the hands of a drunken stranger. Rescued by his crush, he's mistaken for someone who shares the same interests. Seizing the opportunity, he proposes becoming his partner, turning their friendship into a complicated master-and-sub relationship. Can he confess his true feelings?