Few years ago a boy met a girl and developed a love for her,they made a promise that when they were older they would tell each other how they feel about one of the other as the girl was given a crystal pendant from him. Layla a 17 year old who attended Raizen highschool with her best friend amy,enjoying her life with her friend but she is haunted by her childhood memories and tries to figure out who was that boy she met. But one day a boy transferred over sea's enrols into her highschool and class,upon seeing him her memories about her child past begins to stir and in her childhood past she remembers making a promise with a boy. Unknown to layla that his boy who looks familiar to her he is a vampire,but lurking in the shadows was a organisation who despises vampires and wants to get rid of them all. So how will these two face the threat together once revealing their love to each other..

100 years ago there was a war,a war of light and dark. The demon who ruled the demon realm,summoned his army and began a attack on Avalon who was ruled by the goddess Anita in her realm. The goddess Anita assembled her army and went into battle with the demon king,battle raged on and one until in the end the demon king was defeated. With the battle over goddess Anita used last of her powers to restore Avalon and vanished from the realm for good as for the demon realm it was exiled from entering the realm. Many years passed 17 year old Leah daughter to the now queen and goddess Clarissa begins to head to a famous academy in Avalon to learn more about Avalon also about other races. Leah will also attend to learn how to deepen her magic and how to make it stronger,but little does she know that something else is being planned inside the academy.

On a stormy night a family of vampire hunter's enjoyed the night with their little girl who was named Yuki Tsukiyomi. Unlike other children yuki was special because she was a pure blood vampire,one of the strongest and rarest which was unknown to her. During the night vampires who went rogue due to their lack of thirst for blood of the pure blood,entered yuki's home. As top and one of the best vampire hunters,yuki's father stayed behind to hold of the horde of the rogue vampires as yuki and her mother fled. They managed to flee and seek shelter in a old warehouse,but was found placing a amulet around her neck,she kissed her forehead then slowly injecting her she was placed into a deep sleep. Many years have passed and yuki was living with a wealthy family who are vampires who know that she is a pure blood and their little sister,but she has no memories of them or what happened that night

17 year old emily is a normal wealthy school girl who enjoys hanging out with her friends after school,but during one day at school she heard about people being attacked in the middle of the night in alleyways. During one night when walking home from the school after staying behind,emily was grabbed by a cloaked figure and put to sleep the figure vanished with her. Few weeks went by and emily have been living in a castle,being held prisoner by the prince of vampires,but emily begins to think there is another reason why he is holding her prisoner but what though. Emily would have to use all of her idea's to either escape from this vampire or find out the true reason why he wanted her.

Sophia 17 years old,a caring loving human girl who enjoys her normal life,but unaware to her that there is a secret that she is the long lost vampire princess. As she cant remember about her past,or remember any of it because when she was only 6 years old she lost her parents,so it claims to be but in fact she was abducted and kept prisoner. But she managed to escape and managed to go in hiding,wondering the streets on a cold summer night,she was found two wealthy man and woman who took her in and then eventually she was adopted into the Hotaru family.