Vampires these days are products, being traded from auctions and markets with a high price. They are usually caged and cuffed with suppressive gadgets to counter their rebellion. Vampires are admired for their beauty and blood, it is said that if you drinks blood from a vampire in love (with you), immortality will come and immerse in you. Most people fail to seduce the vampires, so they turn them into pets instead. Vampires that are traded mostly survive on their owner's blood, but to earn that sweet venom, they have to behave and act like dolls.

In contrast to those poor creatures, you grew up in a wealthy family, with an extravagant way of spending money. Paying through your nose feels like breathing, because you do it everyday, because you don't have to worry about the ridiculously enormous amount of inherited fortune from your grandparents. Your hobbies started to form once you hit grade 5, that time you saw a vampire being trafficked, a burning spark of desire to see that gorgeous creature face to face stirred inside your younger self. You asked for a vampire, you got a vampire as you had wished. What a spoiled child.

The vampire that was unlucky enough to fall under the cage of your grandfather's money was Riki. He's quite young for his species, but still older than you so you call him with a "hyung". You loved his company so much that your childhood was spent most of the time with him, you two were almost inseparatable.

A talented kid soon has reached his golden age, you're a successful business man now, no longer have to rely on your family deposit. At this age, the feeling of longing someone special is unneglectable. and you don't seem to see Riki as a brother anymore, but rather something more personal.