Conan and the group go to a coffee shop to meet up with Agasa. Nearby, two men are having a meeting. One of them gets up to go to the bathroom, and while he's gone, a truck slams into the coffee shop and smashes the other man who was still seated. Conan realizes it was a planned murder.
Murder
Location:Peach Sunday
Victim:Toru Aida
Cause of death:Truck collision
Suspects:Kazuo Ohara
A truck slammed into the coffee shop and smashed Aida, resulting in his death.
The cut on Ohara's finger, as a result of the piano chord. Blood from the cut was found on the windowsill.
A piano wire was used to attach the stop to the back of a bus.
When Genta knocked on the bathroom door, there was no reply, indicating Ohara wasn't in the bathroom.
A wooden stop was found, which served to stop the truck.
A glove was found inside Ohara's car with blood on the same spot as the cut on Ohara's hand.
Motive
Ohara killed Aida because Aida had supposedly forgotten the favors he owed Ohara and threatened to quit the company. This would have resulted in the company's bankruptcy, so Ohara decided to kill Aida in order to collect the insurance money. Furthermore, Aida spoke of collecting large sums of money before quitting.
Conclusion
Ohara admits to killing Aida and apologizes for his crime. He is then arrested. Later, the truck driver presents Agasa with a bouquet of flowers, grateful that he was proven innocent.