Death Eraser

The eraser stands as the notebook's mirror image. Striking a written name from a death note reverses the death it caused, returning the slain person to the living so long as cremation has not taken place. The item exists only within the prototype tale that preceded the main series, a one-off artifact dreamed up before the rules of the finished work were settled.

Wracked by guilt over the lives he has taken, Taro Kagami receives the device from Ryuk, who explains that wiping out the entries will bring the dead back. Kagami does so and wakes the next morning to find the bullies he had killed alive once more. The eraser therefore offers a complete reversal, something the published canon never permits.

The object belongs solely to that early prototype story and never resurfaces in any later Death Note work. The finished manga and anime replace it with a far narrower allowance: a cause or set of circumstances may be cancelled or rewritten only if struck through with a pair of straight lines before forty seconds elapse, yet a name once entered always proves fatal. The 2017 Netflix film introduces its own loose echo of the concept, ruling that a scheduled death can be averted if the page bearing the name is burned. Within the pilot itself, the eraser is handled by Taro Kagami and by Miura.