"Call of the Night" (Yofukashi no Uta) is a supernatural manga series by Kotoyama that follows the story of a high school boy, Ko Yamori, who becomes a vampire after an encounter with a mysterious girl named Nazuna Nanakusa. The manga explores themes of identity, belonging, and the struggle between humanity and the desire for blood.
In the first chapter, Ko meets Nazuna, who asks him to accompany her on a nighttime walk. Ko is hesitant at first, but eventually agrees. Nazuna reveals that she is a vampire and bites Ko, turning him into a vampire as well. Ko is initially in shock and struggles to come to terms with his new identity as a vampire.
As Ko learns to navigate his new life, he discovers that there are other vampires in the city, each with their own unique abilities and quirks. He befriends his neighbor, Tetsu, who is a vampire hunter, and together they investigate a series of mysterious deaths in the area. They discover that a powerful vampire named Aoi is behind the attacks and confront her in a battle.
In the third and fourth chapters, Ko learns more about the vampire community and meets a group of vampires who run a bar. He also meets a young vampire girl named Akira, who is struggling to come to terms with her identity as a vampire. Ko becomes determined to help her and offers her guidance and support.
In the fifth chapter, Ko and Tetsu encounter a powerful vampire named Nanako, who has the ability to control shadows. Nanako is initially hostile towards them, but they manage to persuade her to work together with them to defeat a common enemy.
In the sixth chapter, Ko and Nazuna go on a date, but their outing is interrupted by a group of human vampire hunters. Nazuna reveals that she has a dark past and is being pursued by a group of vampire hunters who want to use her for their own purposes.
In the seventh and eighth chapters, Ko and his friends attend a vampire festival where they encounter a variety of vampire characters and participate in various activities. Ko also learns more about the history of vampires and their role in society.
In the ninth and tenth chapters, Ko and Tetsu investigate a series of mysterious disappearances in the city and discover that a group of rogue vampires are responsible. They confront the leader of the group, who turns out to be a former friend of Nazuna's.
Throughout the manga, Ko grapples with his conflicting desires for blood and his desire to remain human. He also struggles to find a sense of belonging within the vampire community while maintaining his relationships with his human friends. The series ends on a cliffhanger, leaving readers wondering what adventures and challenges await Ko and his friends in the future.