A young woman and eyewitness to the serial killer's attack. She was saved by Kunikida during a past subway attack and had confessed to him. She cooperated with Dazai and Atsushi, revealing details she had not even told the police, including that the killer seemed to be talking to himself rather than to his victim. She had trained in karate but was too terrified to move during the attack, which occurred around 3 AM in an alley near her home.
