Cherry Blossom Umbra Six-Star Evolve Gem

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