Windstorm Wayfinder 4-Star Evolution Gem

The purest gem of star energy can enhance the star level of the Senshi "<Windstorm Wayfinder> Stern."
It can be gifted to a Senshi through the "Gift" button in the Senshi interface, allowing their star level to increase up to 4-Star.
You must own a 1-Star Senshi before gifting, and only one star level can be increased at a time. After advancement, the original Star Energy will reset to zero.