To earn the Immaculate Eternity and Threefold Transience achievement, you need to collect the memories of the three Moon Sisters scattered across the Frost Moon area. These memories reveal more about Canon, Aria, and Sonnet while rewarding you with several treasure chests. Before you begin, unlock the Frost Moon region through the event’s main progression. For the Nuur Stone Circle memory, you must also complete Origin of the Sequence, unlock the Nuur Stone Circle facility, and fully upgrade its offerings. This guide explains where to find all Moon Sisters’ memories and trigger their cutscenes.
3 Locations to Find Moon Sisters in Frost Moon
While traveling through the Frost Moon zone, go to the Bubble Pool, the Golden Hall, and the Nuur Stone Ring. Here, you will see certain specific interactions among the three Moon Sisters and get to know more about them. Visiting all these places will help you earn the Immaculate Eternity and Threefold Transience achievement.
Bubble Pool
First, go to the Bubble Pool Transit Station and then move to the southern part where there is water. Go for Floating Ooze and use it along with Moonglow Frostfin Whale to gain access to the ship’s deck. As soon as you access the deck, a cutscene will start, wherein Canon asks Aria why she took mortal form. Once the cutscene is over, you will be given a Precious Chest.
Golden Hall
First, complete the Golden Hall waypoint and travel there. After arriving at the location, fight the enemy protecting the Golden Hall Transit Station, and then activate the station and summon a boat. After entering the boat, a cutscene will start. In the cutscene, Canon lectures Sonnet for running away to play with humans. After the cutscene ends, you will receive two Exquisite Chests and one Luxurious Chest as a reward.
Nuur Stone Circle tower
It is necessary to upgrade the Nuur Stone Circle offerings to their maximum level. After that, the seal on the giant tower near the stone circle will vanish. You need to enter the tower and ride an elevator down into the basement floor. From there, go to the teleport point and activate the glowing object, which will summon the ship. Ride the ship to watch the final memory of the Moon Sisters.
Rewards
By finding all three Moon Sisters’ memories and watching each special cutscene, you will earn the following rewards:
- Immaculate Eternity and Threefold Transience Achievement
- 1× Precious Chest (Bubble Pool)
- 2× Exquisite Chests (Golden Hall)
- 1× Luxurious Chest (Golden Hall)
