Elvira's parents were killed when she was almost eight years old, after that she went and lived with the Kiryu's for one and a half years. How will her and Zero react after not seeing each other for almost five years? And what's this about a group of vampires aiming for Elvira's blood specifically? Zero X OC (Sad Moments Will Happen)

Princess Momoi had always lived a sheltered spoiled life until the day her father was killed by the love of her life, Kuroko Tetsuya. Forced to flee the castle with her bodyguard Aomine, she sets out in search of the four dragon warriors, legendary heroes said to possess the powers of the gods. But can she truly stand against Kuroko? Plot taken from the "Yona of the Dawn" anime.