Cursed Heart {Diabolic Lovers x Reader}

Y/n Komori, oldest sister, and blood relative of Yui Komori, the one who bears Cordelia's wicked heart.
Was ordered by their father to protect her younger sister from monsters that lurks in the dark of night.
Yet have you wondered what would happen if these monsters fell in love with her, blood thirsty and broken fellows that will beg her to stay.
A dangerous mix of chemistry between a vampire and a human

A fair warning to my beloved readers:
~ This is a Fanfiction book, event and characteristics of characters might not be as how they are on the anime, or game.
~ English isn't my first language; therefore, grammar and spelling mistakes might be a common sight in this book.
~This book might contain graphic description, suggestive scenes, mature words