Cameraman Morioka Kouhei is researching Schwarz Quelle Castle. When he steps inside the castle"s great walls, he discovers a mysterious little girl, Hazuki, who"s been trapped there for years. Utilizing her controlling charm, Hazuki tries to get Kouhei set her free. But this sweet little girl isn"t everything she appears to be...Filled with cute cat girls, vampires and psychic mediums, Tsukuyomi: Moon Phase is the manga that launched the popular anime!