Percy Jackson and the Olympians: The Last Olympian is a novel written by Rick Riordan. It’s the last book in the Percy Jackson series. In the story, Percy Jackson and his friends must fight in a battle to protect Mount Olympus and the real world from the evil Titan lord Kronos. The book is full of battles, magic, and making choices that change the world. Every chapter is exciting and makes you want to know what happens next.

　I really like this book because it’s exciting and full of adventures. Percy Jackson and his friends are very brave and never give up. I also liked how the story mixes Greek gods and monsters into the story. I recommend it to anyone who loves fantasy, battles, monsters or books that are funny or about adventure and friendship. It's an amazing ending to the series that keeps you guessing what will happen next.