An interesting question raised by this: had Misa not quartered her lifespan, but assumed Light's mantle nonetheless, would L have failed to catch on?.
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NISIOISIN does not appear to understand this, given that s/he makes a case for BB not being a murderer because he targets people whose lifespans are running out anyway, but we can say that's Mello's lack of knowledge on the subject, yes? A successful killing by conventional methods would, as with Misa's would-be killer, take place at the fated time.Would the person live or would you have successfully killed them before they were supposed to go? This seems fairly simple but I've not seen it mentioned. But what would happen if you didn't have the notebook with you and decided to just kill them by conventional methods? For instance, you shoot the person in the face with a shotgun. Writing that person's name in their Death Note would kill the person regardless of how much longer they had to live. A person with Shinigami eyes can see the lifespan of a person.Invisible ink is visible under certain conditions (an agent is used on it), but standard ink is also only visible under certain conditions (there being enough light to read it). No, it would work as if you'd used a normal pen.So, technically, invisible ink will not actually work. The rules clearly state that, in any case, anything can be used to write a name in the Death Note, as long as it is applied directly, and is legible, it will work.If the "invisble ink" was always invisible but can be seen by applying an agent, well, it's hard to say but the smart money is that it will take effect immediately, and second-most-likely outcome is that it would take effect when the agent is applied. If the ink was visible for any amount of time, the person will die, as writing someone's name in the note is irreversible (though you can delay their death for up to 23 days using details).What would happen if the ink you used looked normal for 24 hours, but then turned invisible?.What would happen if you wrote in a Death Note using an invisible ink pen? Would it work or would it count as "illegible.".Presumably it would still belong to A, since placing normal paper in a Death Note does not make it part of that Note.If you removed a paper from Death Note A and placed it inside Death Note B, would that paper belong to note A or note B, assuming both notes have ownership from two different people?.The pilot chapter says that nothing written on the cover will take effect.If blood works, though, writing on the covers could take effect - but then, Rule 1 says "The human whose name is written in this notebook shall die".
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