Original novel - Emerald Prince - Fantasy&Mystery
I'm not sure if this is allowed here, because it's not fanfiction, but I'm currently serializing an original story, called Emerald Prince.
On my blog - http://www.lavendermintrose.com/?page_id=577
The main character wakes up in another world and is told he has to impersonate the prince, who is missing. When they get to the capital, they find out that an important artifact has been stolen, and one of the High Sorcerers has been murdered, and they have to solve the mystery.