In 9385 AD, a sudden heavy fog enveloped the entire earth. The fog dissipated the next day, but people all over the world fell asleep one after another.
People who have fallen asleep cannot be awakened, and may even die suddenly.
Scientists discovered that the victims carried a virus that would cause people to fall into dreams, and all injuries suffered in the dreams would appear in reality. People named this virus "Nightmare."
In order to save these people, the coalition government recruited talents from all over the country and formed a team called "π". They used a machine called "Dream Entry Machine" to enter the victims' dreams. People called these people "dream interpreters".
Is this disaster an ordinary virus, or is it intentional...
Intention:.