Miyabi is a third-year student at Hebijo Clandestine Girls' Academy and serves as the leader of its Elite Class. Her background is marked by tragedy: she witnessed her mother's death at the claws of a Yoma, an event that left her saddened and without direction. With her father's guidance, she trained in the arts of the Dark Shinobi and grew into a remarkably powerful swordswoman with strong command of the Shinobi Secret Ninja Arts. When the previous Hebijo higher-ups led by Homura disbanded, Miyabi stepped in as the new student leader of the academy.

Her personality is thoughtful and sincere, driven by a deep love for family and friends. She is dedicated to the shinobi craft above all else and cares little about the traditional divide between Light and Dark shinobi; her primary motivation is to see the growth of the art itself. This ambivalence leads her to frequently cooperate with Light Shinobi when larger threats arise, as she prioritizes the overall advancement of shinobi over factional loyalty. Her actions reveal a person who is both principled and adaptable, fighting for what she calls the honor of evil but without malice.

In the OVA "Senran Kagura: Estival Versus - Festival Eve Full of Swimsuits," Miyabi is one of the many shinobi who receive an invitation to a spa resort. She is part of the Hebijo contingent, and alongside her peers she participates in the festival's poolside activities and the eventual comedic conflicts that arise among the rival schools. Her role in this story is that of a composed and capable figure, often aligned with her team but willing to abide by the temporary truce suggested by others. Her notable abilities as a swordsman and her mastery of secret ninja arts make her a formidable presence even in the lighter, swimsuit-themed setting.