```
Six years ago, a shocking incident occurred in Yingzhou, Kanagawa County.
At that time, a railway patrol officer found a girl who was barely alive near the Kanagawa Railway.
The girl was in a terrible condition and, before she died, she informed the officer that she had been captured by a middle-aged man named Senbon Kame and held captive under a bridge five kilometers away.
Apart from the girl, there were many other people in the secret chamber beneath the bridge.
The police thought they were dealing with just a psychotic killer, so upon receiving the report, they organized a small team of twelve officers to rush to the scene.
Unexpectedly, the squad of twelve officers were all killed after entering the secret chamber under the bridge.
Seeking to save face, the police organized five teams with a total of sixty members to pursue Senbon Kame. The result was a complete annihilation; not a single one survived.