So in recent Famitsu magazine interview, Yoshi-p revealed there is another 10 years worth of content for the upcoming Season 2 storyline that begins in 6.1 Update.

There is also mention a Mystery that maybe a reveal during 6.0 MSQ that will bring WoL into and set up the Season 2 storyline.

From what we have learned since 1.0 to 6.0 so far, what do you think this reveal maybe and what it may relate to? Considering this mystery being revealed maybe in 6.0, it certainly may relate to something we already know about but never got a answer to.