Flower Fairy Six-Star Evolve Diamond

The gem with the purest power of the Astral can evolve the Senshi "Flower Fairy Melody" to a higher tier.
It can be given to the Senshi through the "Give Gift" button in the Senshi interface, and can increase the tier up to Six-Star.
You must own a One-Star Senshi before you can give this gift, and it increases the tier by one each time. After evolving, the existing star energy will reset to zero.