Shu Ouma is the main protagonist of the anime series Guilty Crown. He is a high school student who gains the ability to extract weapons and powers from others, known as the "Power of the King." This ability plays a crucial role in the series as he becomes involved in a conflict against a powerful organization called GHQ. Throughout the series, Shu struggles with his newfound powers and the responsibilities that come with them. His character development is central to the plot, as he learns about friendship, sacrifice, and the consequences of his actions in a dystopian world.