Nene Saikyō is a teacher at Hagun Academy, having been hired by its director, Kurono Shinguuji, who was once her rival. She holds the rank of third-place Blazer in the KOK A-League and is known by the epithets the Yaksha Princess and the Demon Princess. Her physical appearance is petite, which often leads to her being mistaken for someone much younger than she actually is. Nene possesses gravity-manipulating abilities that make her a formidable combatant. Her personality is marked by a wild and memorable past, and she carries a strong competitive spirit, especially in relation to her history with Kurono. Within the story, she serves as an instructor at the academy, offering guidance to the student Blazers. Her key relationships are shaped by her past rivalry with Kurono Shinguuji and her position as a mentor to the protagonists. Her development is closely tied to her ongoing interactions with Kurono and her role as one of the world's top-ranked knights, navigating her place between past conflicts and present responsibilities.