I can see why everyone thought that because elex recently has like 0 communication skills and keeps dropping surprise events here and there, a new ranking event is actually incoming, we would have actually had to play Cordyceps' event following chronologically the events of the chinese server but for some reason Elex decided to put Junmai Daiginjo's event first.

Now, I didn't personally play first hand Junmai's event in cn server but last event that came out that had his squad was all about yokais and japanese demon folklore.

So my guess is that they switched the events because Junmai's story was halloween-ish.

And while Junmai's appearence isn't exactly halloween-ish and doesn't make you think about him being an "halloween themed food soul"

His skin, in fact, could fit the description!

It's called "Underworld's night demons" and the skin quote says "In the night of the owl's lament, souls depart and return to their dance in the underworld; in the still hours of the night, living one, take care not to step outside~"