You can find the virtual pop star in a special Vortex dungeon, “Songstress of Light,” which is available for another seven days. By running this collaborative dungeon, there’s a chance you can catch Miku and add her to your squad, though it isn’t a guaranteed drop.
Should you decide to farm for Hatsune Miku, there are three levels to the Songress of Light dungeon:
Shining Stage Lvl 3: 30 Energy
Shining Stage Lvl 2: 20 Energy
Shining Stage Lvl 1: 10 Energy
I don’t think it’s proven, but I believe running the third stage is your best shot at convincing this digital pop star to join your squad. The Hatsune Miku Songstress of Light Collaboration dungeon will be available until October 20, 06:59PST (07:59 PDT).