A ten-kilometer radius has been completely sealed off, and no one is allowed to leave this classroom until the danger zone is lifted. Fear begins to take hold of the children's minds. If they're already infected, it may be too late. They had no choice but to trust the words of the medical team. The infection screening starts immediately. Everyone lines up in a single file as their bodies are carefully examined through probing. The way the medical team forcefully handles these young, fragile bodies feels wrong—this hardly seems like a medical examination. Both teachers and students sense that something is off, but restrained as they are, it's already too late to resist.