You should slow down on the topics you create before a mod tells you to. You've made a lot of them and it's easier to ask them on one thread. On the other thread you posted, someone told you to ask your questions on this thread. Many people will be able to help you there.
The release just came out, people don't know everything. A little bit of research gets you far, just relax a bit and look around.
Since I want to find more to do in the game now that I've beaten the recent release, can someone point me into the direction of starting the Odd Key event?
*Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers* *Spoilers*
Search around the Mansion talking to other bookshelves, fossil containers, etc.
Or, if you really can't find it, it's here:
Whenever playing through Reborn, do you have a specific gang you prefer to join? Do you switch between the two?
Me personally, always joined Aqua. Magma I felt is way too out of the way, and I like how Aqua is in the center of Lapis.
My bad, I'll get you out. I just thought you couldn't do anything at all.
There's an event that's supposed to happen, not sure how to fix it, but I put you outside of the Odd House.
You have to activate all of them, and a door opens somewhere, that leads to things such as a Dawn Stone, Focus Sash, your beloved Odd Keystone tower, and a few other cool things.