WingedHao on the Valkyrie Anatomia Reddit has graciously provided a set of basic translations for the game's UI. You can view them here. Anybody can contribute to this wiki via direct edits or comments!
This is a two-part collaboration for the anniversary of Valkyrie Profile: Covenant of the Plume. Enemies are weak to Dark and Flame elements. The characters Aelia and Wylfred are available in the event gacha. They deal more damage, gain more XP, and cause more event currency to drop.
This is a rerun of the event to get Ailyth. Dark and Holy elements deal more damage. Lezard, Freya, and Ailyth will all grant bonuses during the event. If you do not already have Ailyth, she will be available in the event shop. They deal more damage, gain more XP, and cause more event currency to drop. Progress from the last event will be saved.
The Valkyrie Profile collaboration that introduced Lucian is returning for a limited time. He is available via the event, and any progress you made last time is saved.
This is a tower-style event where each floor has you fighting increasingly powerful bosses. Each boss beaten gives a unique reward. Some of the significant rewards are weapon limit breakers, rainbow books for limit breaking characters, gold and silver gacha tickets, and wood and iron rings for leveling artifacts. Recommended strength levels range from 1,500 to 81,500 depending on floor, and usually increase by 1,000 power per floor.
Event discussions can be found on the Valkyrie Anatomia subreddit.
Advent bosses can be challenged three times a day to earn Character Potential Items.