Azure Oath Holy Blade 5-Star Evolution Gem

A diamond infused with the purest power of the astral realm, used to increase the star rank of the Senshi 'Azure Oath Holy Blade ‧ Aryn'.
Can be gifted to the Senshi via the 'Gift' button in the Senshi interface, up to a maximum of 5-Star.
You must own a 1-Star Senshi to gift, and can only increase one star rank at a time. After advancement, existing Star Energy will reset.