Patricia Roland

Marī Miwa is the director of the prison and the detention center. She is an animal lover who believed in animal therapy. She was important to the case because her cooperation was vital into advancing into the investigation. She called the prison her "home".

Investigation
Miwa was first seen in the prison of where the crime was commited and gave them permission to investigate the crime scene and continue the investigation. At the end of the case, Miwa was proven guilty of killing Naitō. Her motive was that Ryōken Hōinbō had "threatened" her that his many subordinates will kill her. As a result, Miwa became paranoid day and night and falsely confirmed that Naitō was one of Hōinbō's subordinates and she killed him before he could "kill" her.

In the end, it turned out that Sōta Sarushiro had set the whole thing up so he could get revenge on Naitō and he could get away since Miwa killed Naitō out of fear.

Trial
Later, she was put on trial for the murder, with Franziska von Karma being the prosecutor and Tateyuki Shigaraki as her defense attorney. However, the trial was cut short due to the lack of evidence. After the investigation, Yumihiko Ichiyanagi was supposed to handle the evidence against her. Unfortunately, he gave it to his his father who threw it away as trash, in order to cover for Miwa.

Name

 * Her name comes from mimawari, which means patrol.

Development

 * Her pet animal copies most of her facial expressions. At one point she speaks through her pet animal.