The Vocaloid That Changed Everything

This story is based on and continued from Project Diva X, released on the PS4. If you haven't gotten it yet, I will warn you: this story does have spoilers! If you have cleared the main part of the PDX story, read on, and enjoy!
**I couldn't find the original artist for the cover. If you know who it is, please comment down below and send me a link to the artist's profile with the artwork open. Whoever finds it gets a free follow. Thank you!