"These express the story of a princess who is caught in a mansion, and a vampire. 'Vampire Requiem' shows the scene of kidnapping a princess from the mansion, 'Vampire Forest' shows the story afterwards of the life in a quiet forest, and 'Vampire Prelude' expresses the story of an encounter between the two during childhood. If you imagine a great story, this one might be continued."

https://www.tokyorebel.com/pages/interview-baby-the-stars-shine-bright-and-alice-and-the-pirates-pt-2