Kioku Sousa ~Shinjuku Higashi-sho Jiken Fairu~

When a fatal explosion destroys a local pyrotechnic factory, Onizuka connects the deceased president to a past assault involving a predatory finance company. While investigating the factory's massive debt alongside Saki, Keitaro, and new teammate Yojo, a second explosion kills a disgruntled former worker who leaves behind a digital suicide note confessing to the initial bombing. Although the police force prepares to close the case as a murder-suicide, Onizuka uncovers hidden evidence that upends the entire investigation.