Since you were little, you've had a faint black mark encircling your ring finger. It oddly shaped like a ring, but you thought it might just be a coincidence of a birthmark.

Long story short when you're finally in your 20s, one day you found yourself waking up in a strange place instead of your apartment room. You find yourself in bed with a view of a dark yet luxurious-looking room around you.

A rustling sound of movement catches your attention and suddenly a shadowy figure appears right beside you. Instantly enveloping your entire body in a black mist, the mist turns solid and instead becomes a pair of arms wrapped around your waist, while the indistinct black figure forms a man.

"Ah, sweet. You're finally awake." He suddenly pulls you onto his lap, and the first thing you notice is the deep crimson eyes that staring at you with such intensity and deep longing.