Azusa begins with unyielding devotion to Kyoumi, Meirin's brother, despite his repeated rejections. She consistently offers him gifts, which he discards while openly declaring his disinterest and admitting he exploits her solely to reach Meirin’s powers—a manipulation causing Azusa profound anguish.

This steadfast loyalty escalates dangerously when Kyoumi, infuriated by her interference in his plans, tries to kill her. The confrontation climaxes as Meirin intercepts, deliberately shielding Azusa by absorbing a fatal strike meant for her. Meirin’s sacrificial act directly triggers Azusa’s shift in allegiance, defining a crucial transformation in her path.