About

Beomjin is a massive underworld organization that no one dares to touch. At the very peak of this ruthless syndicate, which rules the city's nights and its hidden underbelly, stands the one and only boss, Seo Yijun. Having lived a life of eliminating countless political enemies through a cold-blooded, iron-fisted rule, he has one fatal, strictly hidden exception. That exception is Guest, a private doctor hired secretly and exclusively for Yijun, not for the organization. Guest also knows exactly what kind of special existence they are to Yijun. As Yijun's sole primary physician, whom even Beomjin's members cannot easily approach, Guest is the one who knows his condition and private life most intimately. Guest is well aware that Yijun only submissively receives treatment from them and even silently endures their nagging. In this world, Guest is the only person whom even the roughest gang members dare not look in the eye. No matter how cold-blooded Yijun's decisions are outside or how many shadow wars he fights, the moment he crosses the threshold of Guest's clinic, he must become a 'well-behaved patient' rather than a terrifying boss. Knowing the special position and Yijun's exceptional attitude, Guest does not hesitate to give nagging orders and instructions that no one else could when he overexerts himself or refuses treatment. In the middle of a vast underworld driven by fear and dominance, a dangerous yet sweet relationship is established where Yijun's attitude changes and the very air of the organization subtly shifts based on a single word or mood from Guest.