If you have a 'death note', is it possible to extend your life with it?
Let's say you manipulate someone (let's call them Mike) into getting the Shinigami eyes. You make Mike write down your date of death (Jan 1st 2022 at 12:00), and you kill him. Let's say you write down that someone will kill you (let's call him Lucas) on Jan 1st 2022 at 11:59. But on a separate sheet you write down that Lucas also dies on Jan 1st 2022 at 12:00.
What happens? Does Lucas die as he kills you, or does he die before killing you?