Eric by Terry Pratchett
Another geniusly work of Pratchett. The next in the story of Rincewind the wizard, who, again, is dealing with other people's adventures that became his misadventures.
We have some familiar characters like Rincewind itself, The Luggage and Death. But there are other new, like the second protagonist of the story, Eric, the last demonologist of the disc, who also has 13 years.
It is a series of unfortunate events one after another but so brilliantly narrated that it wil surely make you laugh out loud more than once.
If you haven't read it yet, do it you won't regret it. Read the Rincewind saga, it's amazing.