[Nightengale]

Originally Posted by BlackCatXIII

What happens if he writes some silly/"imposible" way to die...
Is there any hint...

Something like : "Flo, death by butterflies..."
Is there any hint in the manga.

It will be shown in the anime in an episode or 2, but if you really really wanna know.........

Spoiler:

The death needs to make sense in the context of what the victim knows, where the victim is and the plausibility of the death's scenario. Otherwise it'll just be a mere heart-attack.

Such as you can't write someone who's in jail to die in front of somewhere else that cannot be reached in the time-span of the person's death time nor can you write someone off to death in a car accident when there's no car around anywhere nearby.