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月詠～MOON PHASE～
只会拍摄灵异照片的摄影师森丘耕平，为了取材来到了德国的古城堡，与吸血鬼少女叶月相遇了。在城里被幽禁的叶月，吸了耕平的血、想作为“仆人”逃出城里，可在耕平身上却没有一点效果。后来不知不觉的耕平破坏了城里的封印装置，与叶月成功的从城里逃了出来，为了寻求母亲的的行踪而来到了日本。 到达了日本的叶月，来到了耕平与祖父一起居住的家，无理取闹般的和他们住在了一起。自小也失去了母亲的耕平，看到了叶月与自己的重叠，决定作为保护者保护叶月一起寻找母亲。 此时一个名为艾尔弗里德的吸血鬼少女以及吸血鬼伯爵金凯尔出现了，要把叶月带回城堡。 母亲行踪？叶月与耕平的命运？
Seeking to understand why he couldn't capture a hauntingly beautiful young girl on film, Kouhei Morioka stumbles into a medieval castle and a world he cannot comprehend.
In order to free Hazuki, Kouhei sets out to destroy the crystal orb - the source of the castle guardian's power. Meanwhile, Seiji joins the battle from outside the barrier.
Kouhei and Hazuki seek out the young vampire's childhood home, so that she may fulfill her last promise to her mother - the same mother who abandoned her two years past.
The return of the full moon has stirred Hazuki's thirst for blood. When Kouhei won't give her what she wants, the little vamp sets out on the hunt.
Elfriede, a servant of Count Kinkel, has come to retrieve Hazuki and return her to the castle. The little vampire proves to be less than agreeable, and a fierce and furry battle begins.
Kouhei's family, Hazuki, and Haiji seek mystical assistance at the Mido home in Kyoto. When Elfriede arranges a clandestine rendezvous with Kouhei, Hazuki steps in to set things straight.
Finding Kouhei a pitiful excuse for a slave, Hazuki uses her powers to brainwash another unsuspecting soul into following her every command. When Kouhei finds out, a painful fight ensues.
Hazuki finds herself unprotected after her hopes are painfully manipulated by Count Kinkel. Kouhei and his grandfather must charge into battle to save her.
While Gramps and Elfriede join forces and take on Count Kinkel, Kouhei finds Hazuki and wakes her from an enchanted slumber. Unfortunately, the girl who rises to greet him isn't who he had hoped for.
With Kouhei at death's door, Hazuki agonizes over her attempt to kill him and is haunted by the relentless voice of her alter-ego, Mistress Luna. Is it truly her fate to lead a cursed life?
Concerned for her servant's health, Hazuki embraces her catty nature and rises to the challenge - Literally! But when Gramp's condition takes a turn for the worse, this kitty proves to have some fierce claws.
Kouhei, Seiji, and Hazuki must set aside their fears and travel to the little vampire's childhood home. As Kinkel warps reality, each turns against the other, forcing Hazuki to try and drive him away.
The battered heroes head out into the day to defeat Kinkel. But when a vampire has managed to survive for over 900 years, his death will not be an easy one. Whose bluff will be called in the end?
Hazuki's behavior is growing increasingly odd. While Elfriede wonders if she has turned to her alter-ego to escape her guilt, Kouhei realizes how much he misses the other side of Hazuki.
With both sides of Hazuki battling for control, Elfriede convinces the young vampire to seek out another servant under the full moon's light. Kouhei heads out into the night after her.
Hazuki reveals yet another hidden talent: the ability to suppress her presence. In her absolute stillness, Kouhei finds the perfect subject for his photography. Unfortunately, Hazuki's self-doubt soon creeps in.
During the quiet hours of the night, Elfriede unburdens her soul to Gramps. Kouhei, feeling powerless to protect Hazuki should another vampire come after them, decides to take his training into his own hands.
Kouhei's intense training in the mystical arts pays off. When Hazuki is set upon by a demon up on the mountain heights, it's the servant to the rescue.
Kaoru, jealous of the bond between Kouhei and Hazuki, seeks to capture her betrothed's attention by copying the antics of the young vampire. It's a feline fetish under the full moon!
Seiji returns bearing grim news of the world outside, but the danger has arrived before the warning. As her servant lies broken at the hands of another, Hazuki flies out into the unknown to save him.
