(Ya Question) what is the biggest mystery of your wip

There are many mysteries behind Akria. Nobody knows who really founded the continent first, if anyone has ever made it to the top of Mount Oha, or if the king is a human in disguise or not.

The actual truth behind the Realm Guardians (I still have to come up with the details though)

Literally the whole plot

Inketer's biggest mystery is the truth behind the Great War. And what truly made the king go mad

I haven't gotten into the mysteries of Kalama and the Elements. But the biggest one had to be How did Umi no Mori became the most dangerous forest in Zahrada.