Nemesis
Nemesis Episode 4
S1 E4:
A teacher falls to her death at all girl's high school. At the request of the school counselor, Yukimura, Kazama begins an investigation, using an AI developed by AI researcher Himekawa to narrow down the suspects. Meanwhile, Anna sneaks into the school as a transfer student and becomes friends with Rena, who is rumored to have been in a relationship with the victim.