Windstorm Wayfinder Six-Star Evolve Star Gem

A gem containing the purest power of Astral, which can promote the Senshi "<Windstorm Wayfinder> Stern" to a higher star level.
You can give it to the Senshi through the "Give Gifts" button in the Senshi interface, and you can raise the star level up to Six-Star at most.
You need to have a One-Star Senshi before you can give it away, and you can only raise one star level at a time. After promotion, the original star energy will be reset.