It's been seventy four days since kitahama's return, and Tsubaki, shintaro, and the rest of the gang are back at the house. They don't really know why they're back, but they do know that they've kidnapped Tamura and killed him. They're still not sure why Tamura found out about their crime, or why he murdered Tamura. They need to figure out how Tamura came to know about their crimes.