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Ayanokoji Kiyotaka vs Light Yagami

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MorrisHatesYou

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Ayanokoji vs Light

Takes place in the Death Note world. Ayanokoji takes the position of L with the mission to catch Kira and is equipped with all the resources L was equipped with. Will Ayanokoji be able to catch Kira or would Light remain hidden?



Ayanokoji's win condition: Proving that Light is Kira.

Light's win condition: Staying hidden as Kira
.

Who will win the match?

Ayanokouji (7):- XxZetsuxX, TheHuntsman1001, DeltaStriker22, RoggerReggor, Dark_Soul20189, AlipheeseXIV, Inferno3054

Light (12):- TWILIGHT-OP, Zefra3011, Syncornize, KnyRaizn, Hecky2222, Lort15, Reiner04, Doggo, Viktorian97, Robo432343, MorrisHatesYou, Azertyhuuh

Inconclusion: 0
 
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Well, i suppose i don't mind giving it ago another time

But if we go by SCD standards, Ayanokouji currently no diffs Light..
 
Wasn't this done before?
So here is the link to the last time this match was done in case anyone wants to reference prior arguments. I think it was removed from profiles after changes to one of them. https://vsbattles.com/threads/the-perfect-human-vs-kira-8-0-0-grace.170404/

That being said my position since the last thread hasn't changed and Ayanokouji can quite easily catch Kira under these circumstances. I'm gonna be lazy and reuse arguments from the prior thread now but I can elaborate if asked.

So TLDR voting Koji

1. Ayanokouji's Inductive reasoning (pattern recognition and using sets of data to draw conclusions) is completely insane compare to anything showcased in Death Note. He would be able to draw conclusions about how Kira is killing based just on looking at rising heart attack deaths. We see Ayanokouji's inductive reasoning on display in Y1V4 during the zodiac exam and his ability to solve the pattern so easily, again in Y2V3 in the UIE he is able to find a pattern which can predict task locations/objectives from just the first few days of tasks. For those unfamiliar with this part of the LN, it is an exam similar to the island exam from the anime but on a much larger scale involving all 3 grades. Students were given zones on the island they needed to travel to daily to earn points and tasks which popped up which they could participate in to also earn points. Based on where tasks had been appearing, Koji was able to induce the "rules" which determine how they appeared and was able to predict exactly when/where a specific task would appear.
From this he would analyze the spike in HA deaths and find information on victims. It wouldn't take long for him to realize that photos of all the victims were available at the times of their death and by realizing that Kira needs a victim's face to kill this will only lead him to consider if there are other requirements for Kira to kill.

2. Next is the area and times of death. Recall that Light was killing in between the hours of going to school and only began killing every hour on the hour once L suspected a student. This is a large hint for Ayanokouji to narrow down the number of people he suspects as Kira. Also for finding the area Kira is operating in it's highly likely he does this in a similar way to L, by connecting the first heart attack victim who was a more minor victim, to Kira and identifying he is operating from Kanto.

3. Next I don't see Ayanokouji using a trap like Lind L Taylor here since alerting Kira that someone is hunting him isn't his style. Here he would most likely use his father's influence to test Kira to gain more information. He would get in touch with politicians with connections to the police and make his move since the police are who release info about criminals to the public and it isn't a stretch to assume this is how Kira gets information. Ayanokouji would start by manipulating bits of information about criminals before releasing it (e.g. swapping two criminals photos, names, what their crime was, and which criminals names are released). This would confirm his earlier suspicions when criminals whose names or faces were changed stopped dying. This would lead to Ayanokouji implementing this on a mass scale, him having the police release the information but mix up all the names with random criminal photos so nobody has their correct name with their correct photo. This kind of mindgame from Koji is common with him misdirecting his opponents to consider other avenues instead of the person in the shadows. Light who would have noticed with a few criminals recently they didn't die when their names were written in the DN but now would figure out why when nobody dies. He would realize that the names/faces of criminals have been manipulated so in order to fix this he would use his father's connections to get their real names/faces and kill them as normal. His father wouldn't have information on Ayanokouji since he is working independently for now and just manipulating the police through politicians. When criminals start to die again this would be the final piece of information Ayanokouji needs to narrow down his suspects to a manageable number since he can conclude Kira has access to confidential police information.

4. At this point I can see Ayanokouji doing two things here. He would begin rigorous investigation into the high level people in the police with a student family member, and he can continue manipulating information to narrow down his suspects. First, he would just divide the members of the police who might be related to Kira into groups and for each group he would feed them a single criminal whose information had been falsified from them. For example, he would ensure the group Soichiro Yagami is assigned to has one criminal in the file whose name or face is wrong. All the criminals whose information was changed would also not be broadcast to the public. Since the police information Light has wouldn't tell him this 1 criminal's name is wrong he wouldn't know and would be unable to kill them. This would allow Ayanokouji to further narrow down his suspects and he could do this multiples times in a short period of time to quickly narrow down the most likely suspect be observing which of these falsified criminals die or not. For direct investigation he would look at information from each member of the police who could be the leak and do in depth research into them and their family. This could involve cameras in the house but it would also likely involve them being followed similar to what the FBI agents did.

From here it wouldn't take long to narrow down the focus to Light as the most likely suspect and once Koji has his focus on Light his victory would be inevitable. He would only need to set up a situation where he could prove Light is Kira and it's game over. Once Koji can assess Light himself it wouldn't take long to profile him and profile if he matches Kira. From here, it is also important to note that Light has basically lost by the time he become a major suspect, this is because of how badly Ayanokouji is a counter to him and how much he outscales in every relevant facet of outsmarting. Without the advantage of anonymity, Light is cooked here.

If you disagree with parts of how I anticipate this matchup playing out that's fine, but for the outcome I really don't think this is a close matchup. Ayanokouji's investigation would never be revealed to Light, Light would never even have a chance to get his name.

Ayanokouji wins this without too much difficultly so for these reasons and because of how badly Koji cooks Light in general outsmarting
 
Okay, so:

Ayanokouji, for starters, would be able to notice that the killings always happen after school hours—the Zodiac Exam alone is enough to demonstrate his pattern recognition skills. After that, he would deduce that Kira is someone with a strong sense of justice, given that he only kills criminals. Takuya’s psychoanalysis supports this. Keep in mind that Ayanokouji psychoanalyzed Takuya without ever meeting him, relying solely on the actions he displayed during the exam.

Given Ayanokouji’s personality, he would not reveal himself to Kira the way L did, as he prefers to keep things discreet, as seen throughout the series. Furthermore, since Ayanokouji does not act with certainty and prefers to gather information before making a move, he might investigate Kira’s parents. By that point, Kira had already gained access to information about the detectives, and Ayanokouji would likely suspect that Kira is the son of a detective.

After narrowing down the suspects, as L did, and realizing that Kira is most likely among the top students in Japan, he would probably follow him home without being noticed and look for any suspicious activity. Ryuk, noticing that Kira is being followed, would likely warn him, prompting Light to prepare and rely on his acting skills.

The problem here is that Ayanokouji can see through deception from opponents far more cunning and meticulous than Light Yagami. He would sense that something is off. Ayanokouji can notice extremely small details, such as when he realized someone had planted a very small camera in his room. He can also observe the human body in real time, such as when he noticed a student wasn’t actually receiving any information despite appearing to look at a screen.

I believe Ayanokouji would figure out that Light is using the Death Note while Light is trying to conceal it.

My vote is on Ayanokouji.
 
I am gonna be biased here and vote for Light
Given Ayanokouji’s personality, he would not reveal himself to Kira the way L did, as he prefers to keep things discreet, as seen throughout the series. Furthermore, since Ayanokouji does not act with certainty and prefers to gather information before making a move, he might investigate Kira’s parents. By that point, Kira had already gained access to information about the detectives, and Ayanokouji would likely suspect that Kira is the son of a detective.

After narrowing down the suspects, as L did, and realizing that Kira is most likely among the top students in Japan, he would probably follow him home without being noticed and look for any suspicious activity. Ryuk, noticing that Kira is being followed, would likely warn him, prompting Light to prepare and rely on his acting skills.

I believe Ayanokouji would figure out that Light is using the Death Note while Light is trying to conceal it.

My vote is on Ayanokouji.
Great, you just framed L's intelligence on ayanokouji, huh just to make him look smarter.
 
One of the main reasons for Light's downfall is the fact Ayanokouji would not reveal himself to Kira LOL
 
L was completely sure Light was Kira by episode 10 (at the latest) and died months later after not catching Kira.
With no substantial proofs that he was indeed Kira, says how well kira managed to hide it even from that point.
 
With no substantial proofs that he was indeed Kira, says how well kira managed to hide it even from that point.
I mean I could go into this but I think the most fun is Light telling L in the coffee shop that if he were in L's place he would be doing the same thing e.g. presenting a suspect with false non-public information about Kira and try to get the suspect to slip up and admit something he shouldn't know.

However he does realize in telling L this he admits he knows that L has presented him with "fake information" (the 4th photograph) which is something only Kira would know is fake.

For added benefit he says to L after the 12 FBI agents are killed that he knew Raye Pember was the name of the agent following him, which L never mentioned......

So yeah L could definitely be sure Light was Kira pretty early on.
 
So here is the link to the last time this match was done in case anyone wants to reference prior arguments. I think it was removed from profiles after changes to one of them. https://vsbattles.com/threads/the-perfect-human-vs-kira-8-0-0-grace.170404/
I made this match a while back and nothing has changed for Light since, koji on the other hand has access to government resource this time since he's in the same position L was in.
Somehow Light is even more cooked than he was before lol. I didn't even bother to write out new arguments for this new match, I just recycled my old ones.

Light will forever be a Koji victim and I couldn't be happier about it.
 
I mean I can't say I disagree, but in SCD terms that isn't considered a widespread objective take tbf.
unc talm bout sum scd like he the geek himself
Screenshot-2026-04-18-170433.png

:ROFLMAO: :ROFLMAO: :ROFLMAO:
 
Kiyotaka FRA.

I believe from the number of arguments presented, this matchup is seen to be like a stomp in a general outsmarting situation, but I think this matchup can stay considering how this real-life situation (with influence) gives Light significant advantages and wincons on his side.
 
Okay, so:

Ayanokouji, for starters, would be able to notice that the killings always happen after school hours—the Zodiac Exam alone is enough to demonstrate his pattern recognition skills. After that, he would deduce that Kira is someone with a strong sense of justice, given that he only kills criminals. Takuya’s psychoanalysis supports this. Keep in mind that Ayanokouji psychoanalyzed Takuya without ever meeting him, relying solely on the actions he displayed during the exam.

Given Ayanokouji’s personality, he would not reveal himself to Kira the way L did, as he prefers to keep things discreet, as seen throughout the series. Furthermore, since Ayanokouji does not act with certainty and prefers to gather information before making a move, he might investigate Kira’s parents. By that point, Kira had already gained access to information about the detectives, and Ayanokouji would likely suspect that Kira is the son of a detective.

After narrowing down the suspects, as L did, and realizing that Kira is most likely among the top students in Japan, he would probably follow him home without being noticed and look for any suspicious activity. Ryuk, noticing that Kira is being followed, would likely warn him, prompting Light to prepare and rely on his acting skills.

The problem here is that Ayanokouji can see through deception from opponents far more cunning and meticulous than Light Yagami. He would sense that something is off. Ayanokouji can notice extremely small details, such as when he realized someone had planted a very small camera in his room. He can also observe the human body in real time, such as when he noticed a student wasn’t actually receiving any information despite appearing to look at a screen.

I believe Ayanokouji would figure out that Light is using the Death Note while Light is trying to conceal it.

My vote is on Ayanokouji.
I think you’re giving Ayanokoji a lot of points for figuring things out, but that’s not the same as actually winning here.
Yeah, he’d probably notice patterns in the killings faster than most people. He might even suspect Kira is a student with a warped sense of justice. But that still leaves him with a huge list of possible suspects. Getting close to Light mentally is one thing, proving Light is Kira is the hard part.
That’s where Light is so dangerous. He doesn’t need to out-deduce Ayanokoji every second. He just needs to stay clean and avoid one fatal mistake. And Light is really good at that. The moment investigators start noticing patterns, he changes his habits. If someone gets close, he acts innocent. If pressure builds, he creates distractions or uses someone else.
People also overrate lie detection here. Reading body language works when someone is hiding normal crimes or emotions. But Light’s secret is literally supernatural. There’s no obvious “tell” for owning a notebook that kills people. Even if Ayanokoji feels something is off, that’s still not proof.
And Ryuk matters a lot too. If Light is being watched, Ryuk can notice things Ayanokoji never could and tip Light off. That alone makes surveillance way harder.
Honestly, Ayanokoji probably would suspect Light earlier than L did. But suspicion doesn’t equal victory.
He has to expose him completely, while Light only has to keep the mask on.
That’s why I’d still vote Light in this matchup.
 
I think you’re giving Ayanokoji a lot of points for figuring things out, but that’s not the same as actually winning here.
Yeah, he’d probably notice patterns in the killings faster than most people. He might even suspect Kira is a student with a warped sense of justice. But that still leaves him with a huge list of possible suspects. Getting close to Light mentally is one thing, proving Light is Kira is the hard part.
That’s where Light is so dangerous. He doesn’t need to out-deduce Ayanokoji every second. He just needs to stay clean and avoid one fatal mistake. And Light is really good at that. The moment investigators start noticing patterns, he changes his habits. If someone gets close, he acts innocent. If pressure builds, he creates distractions or uses someone else.
People also overrate lie detection here. Reading body language works when someone is hiding normal crimes or emotions. But Light’s secret is literally supernatural. There’s no obvious “tell” for owning a notebook that kills people. Even if Ayanokoji feels something is off, that’s still not proof.
And Ryuk matters a lot too. If Light is being watched, Ryuk can notice things Ayanokoji never could and tip Light off. That alone makes surveillance way harder.
Honestly, Ayanokoji probably would suspect Light earlier than L did. But suspicion doesn’t equal victory.
He has to expose him completely, while Light only has to keep the mask on.
That’s why I’d still vote Light in this matchup.
Copy pasting Koji's intel;

In Year 1 Volume 6, Ayanokouji demonstrates one of his most intricate displays of foresight by predicting the exact sequence of a six-person discussion before it even occurs with such accuracy that he could create a specific outcome with a single interjection. He had instructed Kei Karuizawa to “spill juice” on Kikyo Kushida at a specific time during a class meeting, without offering any explanation which caused a chain of reactions that played out exactly as he had foreseen.

Ayanokouji needed to predict the psychological interplay between all six other people and how their distinct personalities, motivations, and social dynamics would interact and anticipate how they would respond under a sudden disruption. He knew exactly how Kushida would react to being splashed but also how each participant would respond. Every reaction unfolded exactly as Ayanokouji expected, from Hirata’s pacifistic instinct to mediate, to Kushida’s defensive denial, to the conversational drift that would inevitably reveal the uniform detail. This was a carefully constructed situation, grounded in Ayanokouji’s exact prediction of how events would play out designed to extract the information about whether Kushida possessed a spare uniform, which was necessary for his overall plans during the Paper Shuffle Exam.

Ryuuen, reflecting on the event later, deduced that the mastermind had set up this situation and must have “written the script” of the entire meeting, describing someone capable of reading everyone’s thought processes, habits, and behaviors to such precision that they could engineer the entire situation in advance.




Ayanokouji also has stealth mastery which let's him stand near a group of people without being noticed, can kill his presence too, it's highly unlikely someone with little to no perception feats such as Ryuk being able to sense him
 
Copy pasting Koji's intel;

In Year 1 Volume 6, Ayanokouji demonstrates one of his most intricate displays of foresight by predicting the exact sequence of a six-person discussion before it even occurs with such accuracy that he could create a specific outcome with a single interjection. He had instructed Kei Karuizawa to “spill juice” on Kikyo Kushida at a specific time during a class meeting, without offering any explanation which caused a chain of reactions that played out exactly as he had foreseen.

Ayanokouji needed to predict the psychological interplay between all six other people and how their distinct personalities, motivations, and social dynamics would interact and anticipate how they would respond under a sudden disruption. He knew exactly how Kushida would react to being splashed but also how each participant would respond. Every reaction unfolded exactly as Ayanokouji expected, from Hirata’s pacifistic instinct to mediate, to Kushida’s defensive denial, to the conversational drift that would inevitably reveal the uniform detail. This was a carefully constructed situation, grounded in Ayanokouji’s exact prediction of how events would play out designed to extract the information about whether Kushida possessed a spare uniform, which was necessary for his overall plans during the Paper Shuffle Exam.

Ryuuen, reflecting on the event later, deduced that the mastermind had set up this situation and must have “written the script” of the entire meeting, describing someone capable of reading everyone’s thought processes, habits, and behaviors to such precision that they could engineer the entire situation in advance.




Ayanokouji also has stealth mastery which let's him stand near a group of people without being noticed, can kill his presence too, it's highly unlikely someone with little to no perception feats such as Ryuk being able to sense him
That’s a great feat for Koji, no doubt. But I think that feat is being applied to the wrong kind of matchup.

What happened there was Koji controlling a normal social situation. He understood everyone in the room, knew their personalities, and predicted how they’d react to pressure. That’s his lane. He’s amazing at human psychology.

The problem is that catching Kira isn’t just a psychology game. Light’s biggest advantage is that his method makes no sense from a normal human perspective. People are dying from a notebook. There are no fingerprints, no weapon, no direct connection. So even if Koji reads Light perfectly and thinks, Yeah, something is off about this guy, that still isn’t enough.

He needs proof. That’s the part people keep glossing over. Suspecting Light and catching Light are two different things. Koji could be 100% right internally and still fail if he can’t expose him.

And the stealth point helps, sure but Ryuk changes that. Koji being hard to notice matters against people. But if Light has an invisible Shinigami who can spot someone following him, then surveillance gets way harder than usual.


So basically,
Koji’s feat proves he can outplay people in human situations. Light’s whole threat is that this isn’t a normal human situation. Unless Koji can bridge that gap and actually get evidence, Light can still stay hidden.
 
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