Melody of the Boundary
Melody of the Boundary is a Japanese light novel series written by Toshiya Miyata and illustrated by Lam. It began publication under ASCII Media Works's Media Works Bunko imprint in May 2024, with two volumes released as of November 2025. A manga adaptation illustrated by Ikuta Sugimoto began serialization in Kadokawa Shoten's Young Ace magazine in May 2025 and has been compiled into a single volume as of November 2025. An anime television series adaptation has been announced.
Plot
The series follows Kyōsuke Tsurumaki and Kai Amano, two up-and-coming musicians who are members of a duo called Kanitama. However, after Kai is killed in a traffic accident, Kyōsuke quits music, living his days as a freeter. One day, while reminiscing about his past, a person arrives at his home. It turns out to be Kai, which surprises him as Kai was supposed to have died three years prior. Kai, who is showing the energy of his past self, encourages him to take up music again.Characters
;Kyōsuke Tsurumaki;Kai Amano
;Takeshi
;Makoto
;Minoru
Production
Melody of the Boundary is the debut novel of Toshiya Miyata, a singer and actor who is a member of the Japanese boy band Kis-My-Ft2. Having been a long-time fan of anime, Miyata sought to create something that he would be known for outside of his entertainment career. At first, he sought help from staff members, but after someone advised him to write his own story, he wrote five drafts with the aim of having one published as a story. Of the drafts he wrote, he felt most attached to Melody of the Boundary and decided to pursue it. In writing the novel, he wanted readers to appreciate both the positive and negative aspects of the characters, with the two lead characters Kyōsuke and Kai being partly based on his own personality.Miyata found it difficult to write the novel at first, having entered the entertainment industry at a young age and thus having limited formal education. He compared his challenges in writing to his own training in singing and dancing as a musician. As a result of his busy schedule, he would sometimes focus on writing late at night to the point of sleeping for only three hours. The illustrator Lam was chosen to provide the illustrations for the novel, with Miyata giving instructions on the characters and how to flesh them out. Miyata remembered being emotional when he first saw the finished volume and its accompanying drama CD, feeling joy at seeing his original idea come to life.
Media
Light novel
The first light novel volume was published under ASCII Media Works's Media Works Bunko imprint on May 24, 2024. The second volume was announced on July 16, 2025, and was released on November 25, 2025.In December 2025, Yen Press announced that they had licensed the series for English publication beginning in June 2026.