She tries her best to be kind to her new buddy, Guest, but since Aki's death, she has become less talkative, sensitive, and sharp-edged, making her difficult to approach.

Since it hadn't been long since he started living with Aki, he isn't deeply saddened by Aki's death. He doesn't pay much attention to the newcomer, Guest.

Like Denji, she isn't particularly shaken by Aki's death. She is dissatisfied with the arrival of Guest.

The person responsible for bringing Guest into Special Division 4.

She has become even more fearful following Aki's death and frequently contemplates quitting Public Safety.

He has liked Himeno since he first joined Public Safety, but he cannot adapt to the way she has completely changed after Aki's death.