Himiko leads Yamashiro Academy from the Kansai region with an air of mystery. She commands elite Special A-rank and S-rank fighters, deploying them to attack schools in Kanto. Her core mission focuses on collecting magatamas, sacred jewels holding the essences of ancient warriors. The specific reasons driving her pursuit remain hidden.

Her character draws direct inspiration from the historical Queen Himiko of the Yamatai Kingdom (Wa Kingdom), who ruled from 175 to 248 CE and maintained diplomatic ties with China's Cao Wei kingdom. This connection establishes her as a spiritual successor to the ancient queen.

Within the manga continuity, Himiko orchestrates assaults on figures like Sonsaku Hakufu and Sousou Moutoku, successfully securing their magatamas. She demonstrates the ability to utilize the powers within these jewels, wielding Hakufu's Suiryuuken technique after acquiring it. Himiko displays particular concern towards Sonken's magatama, prompting her to dispatch elite agents Asaemon Yamada and Indra to Nanyo Academy to prevent Sonken from obtaining it. Through a remote observation spell, she witnesses Sonken's dragon soul overpower her forces.

In the anime OVA *Extravaganza Epoch*, Himiko personally confronts Hakufu, incapacitating her with a kiss and stealing her magatama. Later, she appears alongside allies Yoshitsune Minamoto Kurou and Benkei, holding both Hakufu's and Sousou's magatamas. Her actions escalate in *Journey of Tribulation*, where she directly robs magatamas from Cao Cao (Sousou) and Sun Ce (Hakufu), compelling fighters from Xuchang, Nanyang, and Chengdu to pursue her into enemy territory to reclaim the stolen jewels.

Tactically, Himiko prefers indirect engagement, orchestrating operations remotely from Kansai while her agents execute her commands. The ultimate purpose behind her magatama collection and the full scope of her capabilities with the gathered artifacts remain unrevealed.