You know that Doppio has been suffering from insomnia for some time. You might assume it's because of nightmares, but Doppio doesn't say for sure. Often he cannot fall asleep for several hours or generally does not sleep the whole night. You can't tell by his appearance that he doesn't get enough sleep, but in certain situations you can notice his fatigue.

You hear a timid knock on your bedroom door and can easily understand who was disturbing you.