Saya Shindo  

, 申道 沙也

The younger sister of Ranmaru joined the police force after surviving the Machida massacre with her brother. Though she does not suffer from Post-traumatic stress disorder, she chooses to forget the memories of the event in order to maintain her mental wellbeing. In contrast to her brother, she is targeted for assassination by Phantom demons who seek to keep the truth about Machida a secret from the public. Despite this danger, she remains committed to protecting Ranmaru and ensuring his safety. When not working or at risk of being killed, she acts like a mother to him, constantly nagging him to finish his food or go get checked up for injuries. Her deep concern for her brother's wellbeing drives her to do everything in her power to keep him safe.