Avatar, The Last Airbender: The Shadow of Kyoshi (Chronicles of the Avatar Book 2)

Kyoshi, now established as the true Avatar, faces the challenges of maintaining peace across the Four Nations after the loss of her mentors. As her reputation grows, a mysterious danger from the Spirit World threatens everything she holds dear. To combat this emerging threat, Kyoshi, along with Rangi and other reluctant allies, must unite their strengths. This sequel delves deeper into Kyoshi's evolution from humble beginnings to a formidable force for justice, exploring themes of power, responsibility, and the complexities of leadership.