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Regarding your comments on the Events and Dance of the Fools (adventure) talk pages, the original event page wasn't re-written, it was replaced: The Dance of Fools (Event) still exists and is filed appropriately, it simply isn't often used anymore. This does mean that your added Dance of the Fools (Event) page is an incorrectly named duplicate, and I'd flag it for deletion for that reason...except I don't know how. And yes, the adventure's page name is also incorrect - it should definitely be The Dance of Fools, not Dance of the Fools. I'll be addressing that myself shortly.
Also, it's assumed that everyone has and is playing with Academagia's DLC because, contrast to the industry norm, it's free. One can freely go to the DLC 16 topic on the Academagia forum and download it along with the...well, supposedly the latest patch included, but the Team kinda fluffed up that aspect with DLC 16, but that's neither here nor there. It is, of course, true that you're not required to play with the latest DLC, but it's definitely recommended and most do, so the wikia's information will generally reflect the latest information.