Event: Of Drink-A-Dreaming
Version 2.5 Event
This is not a flagship event, just a smaller event that occurred during this patch
Event: Hidden Strife
Version 2.8 Event
This event introduced Diluc's alternate outfit
Event: A Study in Potions
Version 2.4 Event
This event is unvoiced and does not feature playable characters. However, it introduces a new plotline that will be referenced in the future so it is still worth checking out
Tumult Subduer
If you've managed to avoid this quest until now, then congratulations! It's finally safe to do
This quest technically released in Version 5.7, but there really isn't any reason to put it off until then
This quest unlocks an endgame mode, so don't worry about it if you are unable to clear parts of it. It is only really here for its story
Event: Summertime Odyssey
Version 2.8 Flagship Event
For the second summer event, we had a return of the Golden Apple Archipelago! Things are looking a little different over there though, so it's definitely worth checking out
There were also two voiced World Quests limited to these areas