Aura Gate 2 can be entered by clearing the 30th floor of the existing Aura Gate.
You can advance to the next floor after defeating the floor boss.
You need to find the hidden key(s) on event nodes on each floor in order to challenge the floor boss.
Upon mapping an entire floor, you will obtain a Mapping Reward.
The following systems are universal to both the Aura Gate 1 and 2:
・The number of times you can open MAG Chests per day