Seika, one of six queen candidates chosen by the divine Bokka to contend for Yamatai’s throne, serves as a shrine priestess dedicated to spiritual guidance and prophetic foresight. She wields a crystal ball infused with the Bokka’s essence, channeling visions and summoning the Light of Bokka—a radiant force that annihilates twisted beings emerging from the Well of Darkness. Her duties extend to relaying vital intelligence through the Jaki network, a clandestine web of informants bolstering Yamatai’s resistance against the occupying Kune army.

When Kune disrupts the sacred queen selection ceremony with a brutal invasion, Seika orchestrates the dispersal of her fellow candidates to ensure their survival. Three years later, she commands the remnants of Yamatai’s defiance from a secluded mountain refuge, shielding its inhabitants through the Bokka’s divine power. Her resolve stems from absolute faith in the Bokka’s wisdom and an unyielding oath to protect all living things.

In secret, Seika collaborates with Fujina, a fellow candidate who infiltrates Kune’s ranks under the guise of betrayal. This alliance enables Seika to intercept enemy strategies and funnel urgent warnings to resistance cells. Known for her nurturing demeanor and steadfast empathy, she prioritizes communal survival above individual ambition, uniting allies through shared purpose.

While her role centers on spiritual stewardship, Seika occasionally advises on pivotal military strategies, weaving prophetic glimpses into tactical guidance. Her crystal ball remains both a conduit for divination and an emblem of her sacred bond to the Bokka’s mandate, anchoring her authority in Yamatai’s struggle for liberation.