The transparent and beautiful melody is gently embraced by the tender voice of "Angel Feather Voice." This piece was chosen as the main theme for the documentary film Revival II (directed by Tetsu Shiratori, 2019), which deeply explores the connection between Earth's environment and human consciousness. Additionally, the film's entire soundtrack was composed by Hitomi (Hitomi Kuroishi), whose music enhances the film's themes and deeply moves the audience.