Asuka Sakurai transitioned to Kiri Pro talent agency after a career as a professional movie actress, a move signaling a demotion that marked the approaching end of her viability as a film actress. This placed her alongside less established talents such as Komugi Nakahara and Megumi Akiba.

Within Kiri Pro, Asuka displayed greater responsibility and professionalism than her peers, seldom complaining despite difficult circumstances. She formed a distinct friendship and respectful rapport with Komugi Nakahara, setting her apart from other agency members who often clashed with or mocked Komugi. Her temperament was generally even-keeled, though she could become angry if sufficiently provoked.

Her previous management strictly forbade public disclosure of her sexuality, warning it would end her career and forcing her into secrecy. Upon joining Kiri Pro, agency president Yui Kirihara implemented a strategic shift in her career path. Instead of concealment, Kirihara gradually steered her towards ambiguous roles and cultivated online communities to foster acceptance within specific fan demographics, deliberately moving away from her prior "good girl" image from conventional film heroine roles.

Learning about this strategic management of her public image initially caused Asuka distress, fearing exposure of her "deepest, darkest secret." However, Kirihara's transparent explanation of the plan ultimately brought relief, leading Asuka to express gratitude and admiration towards her manager. This professional relationship developed personal dimensions, culminating in Asuka initiating a kiss driven by romantic attraction, though Kirihara voiced reservations about potential workplace perceptions.

Documented personality traits include an aversion to Osaka, though the reasons remain unspecified. At a cosplay café event, she chose a distinctively dashing waiter-inspired outfit that drew attention from female fans and agency president Yui Kirihara.

This character does not appear in the 2016 reboot series "Nurse Witch Komugi R".