"The Light Sanctuary was made with a piece of the brightest star on the southern sky when it fell down to the island. It has the power to strengthen all divine beings with power."
The Light Sanctuary is a building which can only be bought in the Glory Shop. It increases the Attack Power of every Light monster owned by the player by 2% per building level. The bonus from this building is applicable in all areas.
The bonus ATK is calculated from the base stat of the monster and is additive with bonuses from runes, leader skills, and glory buildings.