A Bloody Love Game  by Kitty

This is a weird story however so far it's enjoyable. It only has one chapter but the way it is written makes me want to read more and more. 

It is a vampire story including the pairings of JongKey, 2Min and OnTae. In the story Jonghyun, Minho and Onew are all vampires while both Key and Taemin are mortals who one evening cross paths with the vampires. Key and Taemin allow the vampires to their blood for something in return....

So far, considering there is only one chapter, there is no but by the way the chapter has ended is probably inevitable. Still a good story and a great plot and I totally recommend it!