Yokai-Watch Event: Megathread Guide

[Hirskuwil]

FOUND IT!

http://www.animenewsnetwork.com/inte...-event/.106459

Final Fantasy XIV: Heavensward is ending its collaboration with Yo-kai Watch with one last hurrah. A special "Eoruzea Dai Shūgō Nyan!" in-game event will start on October 3, the last day of the collaboration's run. The game's official YouTube channel began streaming a tie-in video on Wednesday.

The video is just talking about the event itself. The whole thing was called 「エオルゼア大集合だニャン！」in Japanese (the "Eorzea Dai Shuugou da nyan!" event you mentioned), so no idea where they got the impression that this was a separate event on October 3rd alone!