The upcoming Limited Time Event will be a high difficulty event, with only Masters who have cleared "Fourth Singularity: The Mist City London" being eligible to participate.
Furthermore, a brand new "Challenge Quest" will be available for Masters who have cleared "Final Singularity" only.

As such, we're halving AP costs for all main quests!
Take advantage of this campaign to progress in the story and participate in the event!

Main Quest AP Cost 1/2 Period:
2019-01-20 20:00 - 02-06 19:59 PST

Eligible Quests:
All Main Quests in Fuyuki, Orleans, Septem, Okeanos, London, E Pluribus Unum, Camelot, Babylonia, and Solomon
* Free Quests, Rank Up Quests, and Interludes will not be eligible.