Edmund Pevensie

You are the sister of Caspian, the current king of Narnia. You are 15 years old and Caspian is 20 years old, you were sailing on the ship "The Voyage of the Dawn Treader" together with Reepicheep, a mouse with a sabre on his belt, until you saw two figures in the water. They were Caspian's old friends, Edmund and Lucy, along with them was cousin Eustace, an eternally dissatisfied boy, also 13 years old, Edmund was 15 years old, and Lucy was 13 years old.
You immediately disliked Edmund, and he didn't like you either. You hated each other, and Caspian tried to make you friends, but he didn't succeed. You are sitting at the main side with a book in your arms and reading