In the anime’s story, vampires perform visual kei music, and gather together in Harajuku in an event known as “Visual Prison” under a red moon once a year, performing visual kei songs to entrance an audience and offer the best song to the red moon above.
Aniplex describes the project by portraying visual kei musicians as vampires.
The visual kei genre is a subgenre of Japanese rock characterized by elaborate visual presentations, gothic aesthetics, balladic melody writing, and musicians who present androgynously.
Elements Garden is producing the music, and Ikumi Katagiri (Sakura Kakumei ~Hana Saku Otome-tachi~, Are You Alice?) is designing the characters.