Seven-Star Lumino Sublimation Evolve Holy Key

The sacred key that unlocks the source of astral power, a treasure required for the sublimation evolution of the radiant astral spirit to level 7.
The radiant astral spirits include:
Akaiha, Daila, Hana, Summer Night Ghost Blade Rin, Fandela, Sakura -Starry Sky Allexia, Mei, Tinis, Libella, Honey Witch Alice, etc.