The Last Silence

Humanity lives inside a vast tunnel that stretches for thousands of kilometers, divided into zones that no one is allowed to cross. Each person is born in a specific zone and is forbidden from leaving it. It is said that "The Silence" lurks outside—a mysterious disease that kills anyone who tries to leave. But the protagonist begins to hear a strange voice through the tunnel walls, urging him to escape. Is he losing his mind, or is he hearing the truth?