The "Sanctuary" is a group of high difficulty dungeons that will appear in v1.3.0.
You can unlock it by conquering the Pandemonium.
The Sacred Realm is made up of multiple dungeons.
The monsters that appear on each dungeon floor, the dungeon effects, and the keystones that are applied are all random.
As you conquer each dungeon, even more difficult dungeons will appear.
You can earn a unique reward, a "Sacred Body Fragment," when you conquer each floor for the first time.
The Sacred Realm is reset every month, its composition is updated, and you can re-receive the first-time conquering reward.
The number of attempts will also be reset every month. 5 attempts will be replenished each day. You can also use Gold Shards to expand the number of attempts replenished each day.
The "Sacred Body Fragment" you obtain can be exchanged for a variety of items in the shop.