The music is a story of a girl, hated and cursed, and a serpent who grants her wish.
If you don't realize it already, the language in this music is a mix of japanese and hymmnos, the language of Sol Ciel, the world of Ar Tonelico.
I plan to make a storyboard for the story, but my laptop is currently being serviced and my tablet is not strong enough for Cytoid Player to make previews.
There are 2 difficulties available. They are basically the same, but Hard is static BPM, and Extreme is varying BPM. The varying BPM is what I intended, following the energy inside the music.
Actual BPM: 100 BPM used:
Hard: BPM 100
Extreme: BPM 50 -> 100 -> 150 -> 200 -> 100 -> 33.33 -> Page buffer (200) -> 150 -> Page buffer (63.15) -> 50 -> 100 -> 75 -> 150 -> End