Izaya

Izaya is wise, serious, and deeply respectful of Asuka Island's traditions. She understands the danger represented by the Seven Stars Sword and treats the legends surrounding it as practical warnings rather than folklore.

She is protective of Maya and the island's inhabitants.

Izaya has no established Devil Fruit or Haki.

Her greatest asset is her knowledge of Asuka Island's history, rituals, and the supernatural forces associated with the Seven Stars Sword.

Izaya helps explain the history of the Seven Stars Sword and the ritual necessary to contain its power.

Her knowledge becomes crucial as the Straw Hats become involved in the conflict surrounding Saga and the island's sacred shrines.

Maya is Izaya's granddaughter and an important participant in Asuka Island's traditions.

Saga becomes a threat to those traditions through his connection to the Seven Stars Sword.