Orihime Minashiro is the reincarnation of Tsubaki Minashiro, mirroring her predecessor's physical form exactly. She functions as the core consciousness of Tatsumiyajima Island, dwelling within its energy source and governing all operational systems. Her essential duty involves safeguarding the island and fueling its defensive mechanisms.

When Seri Tatekami and Soushi Minashiro approach the island's core to express gratitude for her guardianship, she emits a brilliant light in acknowledgment. Later, amid a critical crisis, Emery Almond—accompanied by Narain Wiseman-Bose and fellow island inhabitants—petitions her for enhanced strength to ensure the island's survival. As Emery touches the core, Orihime responds with intense radiance, generating multiple new cores within the Keel Block infrastructure to amplify the island's power reserves.

She materializes before Kazuki Makabe, questioning how he plans to "bless the world" before disappearing. The next day, Kazuki visits her core location, though the details of their exchange remain unrecorded.

Her name "Orihime" originates from Japanese: "ori" (織, "weave") and "hime" (姫, "princess" or "noble lady"). "Minashiro" blends "mina" (皆, "all" or "everybody") and "shiro" (城, "castle"), reflecting her fundamental bond with Tatsumiyajima's collective welfare and structural integrity.