ข้อมูลอนิเมะTsukuyomi: Moon Phase

MORIOKA Kouhei, a Japanese photographer, is taking shots of the outside of a gloomy German castle when he sees a beautiful young girl sitting high on the battlements. He is shocked and smitten. Weirdly, when they are developed, his photos of the young girl show nothing but the castle, no girl at all. Kouhei is in Germany with Ms. ANZAI Hiromi, editor of a magazine about the occult, and Professor MIDOU Seiji, who is studying occult phenomena. They go back to the castle the next day and Kouhei explores the cobweb-hung old rooms. He comes upon the girl, who introduces herself as Hazuki and tells him she is from Japan. She seems thrilled to have someone come to visit her. She says she has a present for Kouhei….

Hazuki is a vampire, and sucks Kouhei’s blood intending to make him her servant. She wants him to help her escape the castle in which she has been imprisoned for years. But Kouhei is a blockhead who is totally insensitive to occult influences, and shocks her by not being affected by her vampire magic at all. He refuses to become her servant, and while they are arguing, Hazuki’s protector/jailer, the giant Viko appears. He would never harm Hazuki, but as for Kouhei….

Hazuki comes to Japan unannounced to live with Kouhei and his grandfather in the grandfather’s antique store. She is fixated on her mother’s promise to meet her again in Japan. Kouhei, remembering that his own mother had abandoned him, ridicules Hazuki’s mother’s promise and says it didn’t mean anything. Hazuki is deeply offended, and storms out into the night. Kouhei eventually cools down and goes to look for her....

It is a month since the full-moon night when she escaped the castle, and she has become a very effective little saleswoman in the antique shop. But on the night of the full moon, her throat becomes dry, and thirsty for blood. She comes to Kouhei for a “kiss

The blonde vampire Elfriede appears and invites Hazuki to return to the castle in Germany, as commanded by her master. Hazuki refuses and has to defend herself against Elfriede and her monsters. She is about to be defeated when Elfriede’s monster approaches Kouhei — and is destroyed on contact. Elfriede realizes Kouhei is “Ama Vampire

Hazuki goes on the train to Kyoto with Kouhei, his grandfather, Hiromi, Seiji, and the cat Heidi. In Kyoto, they meet two young girls who have special relationships with Kouhei and Seiji, and special powers as well. Grandfather, Seiji and Heidi take part in a special ritual that has amazing consequences. And as Kouhei and Hazuki are out sightseeing in the ancient capital, Elfriede appears again....

Hazuki wants a real bed instead of sleeping on a futon on the floor. She can’t get Kouhei or his grandfather to buy it for her, so she finds a special way to get Hiromi to do it. Kouhei is not pleased. Hazuki and Elfriede have a surprisingly pleasant talk that ends with a sudden declaration from Elfriede. With help from her friends, Hazuki learns something about being human....

Elfrieda's master comes to town and takes over from her the job of tracking down Hazuki. Elfrieda has been able to lie to him since she drank some blood from Kouhei, the "Ama Vampire". Hazuki and Heidi are on the roof praying for Hazuki's mother to arrive. With Kouhei's telephoto lens, they see her figure atop a tower and go running off across the rooftops. Kouhei and Grampa run through the streets after them....

Hazuki, held captive by the great vampire, Count Kinkel, lies sleeping, dreaming she is with her mother, in dreams sent her by the Count. Kouhei and his grandfather are in the Baron’s eyrie looking for Hazuki. Elfrieda is now free, having drunk twice of Kouhei’s blood. She helps them as she seeks to destroy the Count, her former master. But the Count has many tricks up his sleeve....