How to Progress
Event AP in Tower Events works slightly differently than most other events.
Higher AP non-event stages, such as Labyrinth Quests, have a guaranteed chance to drop large amounts of Event AP currency even without bonus Memoria, while lower AP stages might sometimes not drop any currency at all.
For this reason, it is good to start by doing any higher AP cost quest to gather some Event AP currency first, to do enough event Challenge Quests to farm Event Shop Currency to buy the Event Memoria with.
There are two kinds of setup for the Event shop memoria.
One type has the Event Shop Memoria typically increasing the drops of this Event AP currency by 1 when un-ascended, and usually by 3 when MLB .
In these cases, there are usually enough of the Memoria in the shop to have 3 MLB ones, and missing one copy for MLB on the final magical girl from your own team. (Your support then can have the 5th and final copy for a full team of Event Bonus)
This last missing copy is a reward from one of the Event Story quests, typically slightly further into the event story.
In the other case, the Event Memoria will increase Event AP Currency drops by 2 when un-ascended, and 5 when MLB.
In this case, the shop will usually have 4 of the Memoria, with a 5th copy being available from the Event Story.
In both cases, 4* Memoria gained from the Fate Weave may increase drops by 3 when un-ascended, and 7 when MLB.
But Fate Weave 4* memoria won’t always give drop bonus, so watch out!
Once you have all the Event Shop copies at MLB, you can do any stage you need at the moment, such as farming for Exp Gems, Awakening materials, certain drop items, or simply going through any Story which you haven’t had time to complete yet outside events.
Do be aware that lower AP quests, especially 7 AP and below, will not necessarily drop Event AP currency on every run, however!