Goei presents as a thirty-five-year-old warrior sporting short purple hair with blunt bangs, glasses, and a curvaceous frame typically clad in traditional kimono. Her combat expertise persists undiminished from her youth, where she forged her reputation as a fearsome fighter. As Hakufu’s mother and Koukin’s aunt, she navigates motherhood with equal parts affection and strictness, disciplining her daughter’s antics while steadfastly aiding her trials. Her demeanor merges flirtatious charm with pragmatic romantic pursuits, openly courting younger partners—particularly high schoolers—yet unleashing ruthless protectiveness when family safety is threatened, once dismantling home invaders single-handedly. She demonstrates battlefield cunning, strategically manipulating combat scenarios to sharpen Hakufu’s skills, such as covertly instructing foes to strike her daughter’s legs mid-duel as a disciplinary measure. Across conflicts, she guides Hakufu through supernatural trials, urging direct confrontations with mystical adversaries to break curses. Though entrusting Hakufu to survive perilous battles, she collaborates with warriors like Shungai Chouko, dryly acknowledging their shared defiance of predestined paths. Later arcs highlight her deadpan humor mocking Hakufu’s blunders—like oversleeping tournaments—while expanding her role as a mediator and host to newcomers. Her playful advances toward select individuals frequently falter, contrasting her recurring jest of claiming eternal youth by declaring herself “seventeen.” Married to Bundai Sonken and connected to an extensive warrior lineage, she prioritizes mentoring Hakufu through their family’s legacy. Though less active in combat over time, she maintains a steadfast presence, balancing maternal vigilance with calculated distance to foster her daughter’s independence.