Death Note

There is no heaven or hell, that's the entire "trick." Anyone who uses the death note doesn't go to heaven or hell.
Anyone who doesn't use it also doesn't go to heave nor hell.

There's also that weird-ass rule that you can ignore the 23 days thing if you write in an illness that takes more than 23 days to develop.

Weren't some of the rules made up so Ryuk could troll people? For example, I remember one rule saying that those who use the note enter neither heaven or hell. Then another rule contradicts this saying that it doesn't matter wether or not you use the note, there's only nothingness when humans die.