PF DC Primed: W15: Balisse & Astral Diva - Titan Games
So I was having a look at the Project Diva F page on The Cutting Room Floor and found out that the Multi Notes from the Arcade titles were meant to appear
Bloom Diva the Melodious Choir
Diamond Diva (outfit) - Fortnite Wiki
A Rant/Warning about the Miku Hori Mini-Con for PS4/PS3 : r/ProjectDiva