Yona is a popular Japanese manga series written and illustrated by Mizuho Kusanagi. It follows the story of a young princess named Yona who witnesses her father's murder and is forced to flee her kingdom. Accompanied by her loyal bodyguard, Hak, she embarks on a journey to reclaim her throne and gather allies. The series combines elements of fantasy and adventure, featuring themes of growth, friendship, and resilience. As Yona travels through her kingdom, she meets various characters, including the legendary Four Dragon Warriors, who play crucial roles in her quest to restore peace and justice.