Murmurs in the Dark Realm

The invigilator's eyes had never left the student since the beginning of the exam: his face was pale, his eyes were swollen, and his whole body was depressed. The student's swollen hands were raised tremblingly. The teacher did not dare to neglect and walked over quickly: "Classmate, what's wrong with you?" "I'm thirsty, can you give me water?" The student's eyes were distracted and his voice was weak. The teacher breathed a sigh of relief: it was just a normal request in the examination room, so he immediately handed over the water without thinking too much. The student didn't hesitate at all, raised his head and drank the water in one gulp. After just a few minutes, he fell straight to the ground and never woke up again. An investigation later revealed the truth: He had drunk five or six bottles of water before the exam, and this last glass was the last straw for him - a typical case of water poisoning, and he ended his life with his own hands. And there was only one crooked line left on his test paper: If you break the treaty, you will die.