The Legendary Us (Twice & Bts Fanfic)

In this immortal world supernatural beings like vampire,werewolf,witches and necromancer exist. In this land there are three mansion's and each mansion had a rich and powerful creature's and in immortal world human are not allowed if a human find about this village they will be punished or stay there serving them until you die

What is the connection of the twins on that world?
Will they find there true love on that world? Or they just put their selves in danger?

Read if you want to find out...

Since this is my first fanfic I apologize for the wrong grammaring please give me tips on how to make it better if my story have similarities on someone else's story is coincidental, my friends just requested this story to me cause they really like fantacy stories hope you like it...