#detective conan theory

[hnnyoongs]

Detective Conan Manga Spoilers!! Proceed With Caution!

Considering how Yamamura knew Hiromitsu as a child, he's essentially connected to the BO plot now, meaning that what goop said here might actually come true...if Gosho remembers lol.

But speaking of Magnum (Yamamura), in his first appearance (Episode 96), Yukiko had introduced Conan as her second son:

Yukiko: Yep! My second son, Conan! I had him in Los Angeles!

And while we don’t see Magnum himself directly told as much, he does seem to believe that Conan is Yukiko’s child; in his second appearance (Episodes 199-200), he mentions that first case and seems to want to refer to Conan as Yukiko’s son, 息子 (musuko)…

Eri: Oh, you’ve met Yukiko and this child already? Magnum: Yes, it looks like her husband came after, too. But they pulled me all around the case, and it was quite exhausting. Especially this Musu…

But Conan quickly interrupts Magnum before he can say anything more on the matter:

Conan: Mu… Mu… That tubby Ojii-san was the culprit right?

It really doesn’t translate well; in the subtitles used for the UTB (United Television Broadcasting) airing of the show in Southern California, Magnum’s presumed reference to Conan’s parentage is omitted entirely. He says, “Especially this kid,” and Conan bursts in with, “Oh… th-that grouchy man was guilty, wasn’t he!!” You still get the sense that Conan doesn’t want Magnum to say too much in front of Eri, but I feel like some significant meaning is lost. I wonder how Viz’s English translation of the manga handles this scene.

But… does this even ever come up again? Magnum straight-up thinks that Conan is Shinichi’s little brother, and as far as I know, that’s never mentioned after this point?

I’m waiting for Magnum’s knowledge to wind up being super critically important.

[kidconsky]

I really like the theory that Kaito is 1 year older than Shinichi.

This was something I thought about when I rewatched some dcmk stuff, I recently saw a post about it on Facebook and now I have it on my mind again...

In short, it would be due to the fact that when Aoko turns 17, Kaito is already 17 and if we try to put the story in chronological order, he still hadn't seen Shinichi in the clock robbery, meaning Shinichi would still be 16 because when he turns 17, he already lives like Conan.

The problem is that in the clock robbery episode it is said that Shinichi is also 17 years old, which doesn't make sense because like I said, in film 1 he has a 17th birthday, so it ends up being this mess... ah, wow another plot hole in dcmk who knew...

[kakapim]

Playing devils advocate here.

I still think that Toichi being alive is ... a not very good idea, but... now that the shock has passed and I'm chill about it now, and have been rereading stuff... there Might Be Something Here.

My favorite theory about Toichi that saves his ass from being a completely shitty father is that the assassination attempt did not kill him, but DID leave him disabled somehow. Kinda of what happened to Kudo, except he wasn't shrunk.

That would explain:

1- Why he had to disappear for 8 years. I don't think Chikage could explain to a child that his father "had an attempt on his life and is now hiding" that would be hard to explain, and kids aren't the best at secret keeping.

2- Why Toichi left stuff behind for Kaito. Since he cannot perform magic tricks and parkour anymore, he let Kaito decide if he wanted to carry the mantle of being KID.

3-Why he still hasn't showed up. Remember that Kaito Corbeau was Chikage dressed as him, and in movie 27 is flashback from Yuusaku (as I've heard, I have not watched the movie). And he was dressed as Corbeau, so I guess we don't fully know how he's doing modern-day. Him being in Japan would be too much of a liability.

This stuff also explains why Kaitos room was timed. His door was going specifically open after 8 years, being 17, which is old enough to know the truth and not spill.

Interestingly enough, it seems this decision of making Kaito the Kid was not something Toichi and Chikage agreed on, judging by the fact she asked Kaito to stop being KID and move to Vegas (and the whole Corbeau fiasco) and seemed somewhat upset in the first manga chapter when she realizes Kaito had found out the secret room.

But despite all of this, it doesn't explain why Toichi couldn't have simply just... called him? Like once the door hit the timer, he could've just called the boy. Tell him "Hey son I am alive although not well. Yes, I was the thief KID. I dont know what you will do with this info but have fun I guess". Cmon. Unless the disability in question was amnesia or something.

The only thing that breaks this theory is the fact that apparently Corbeau has been making the rounds in Las Vegas... but as I said before, Chikage asked Kaito to come with her and get there. Which is curious... does she want Kaito to meet the real Corbeau? To know something that's been a secret? Def something to ponder about.

So yeah... Gosho might have burned the rice but he might be able to clutch this. What I'm saying is, while hating on Toichi is funny, perhaps we should be a little more patient to see what happens.

[brain-wyrm]

She's like Jerma, being all "NO KIDS, I CAN'T take you with me to confront the man who just violently assaulted an officer!!"

Then chat (Detective Boys) are like

And then Sato is like ...

"They can have one Officer Down response as a treat"

[jaehattori]

Do y'all remember my post of emirichu of her mentioning shinichi. WELL GUESS WHAT!! in her latest video, she shows clips of herself in the Detective Conan cafe(I think this is the 30th anniversary one?) Detective Jae time! Considering that this was just her anime guide video and her mentioning that more anime cafe videos will be coming its most likely we will get a video where she reviews the cafe (YIPPIE!! Also the last photo is my planner I got from her merch) SO FUTURE DETECTIVE CONAN CAFE VIDEO!!!!

[clownakai]

Today’s a pleasant Saturday, and after having a good laugh at the "The reviews are in" post, I thought I’d dive into an intersting theory about the possible connection between Gin and Mary :)

Shared Phrases (?) Both Gin and Mary are the only characters to say, “It’s like encountering a demon in the darkness.” Similarly, Tsutomu and Shuichi are the only ones who’ve said, “The fault is 50/50.” I mean.. it's pretty obivious from just here already.

Appearance In terms of appearance, Mary, Sera, Akai, and Gin share two notable features: green eyes and distinct lines under their lower eyelids. Mary also has platinum hair, much like Gin’s.

Mary’s shrinking instead of being killed Mary’s shrinking, rather than being executed by BO, is particularly strange. After all, BO is notorious for ruthless efficiency—why use APTX 4869 instead of simply shooting her? The idea of sparing an enemy with a “golden medicine” that took years of research feels uncharacteristically merciful for BO. Their usual motto of “leave no trace” makes this decision seem odd and deliberate.

The boss’s decision to let Mary live seems to be a carefully calculated trap. It’s confirmed that Sherry’s mother and Mary are biological sisters (as the author has stated that Akai and Sherry are cousins). This means Mary and Sherry share familial genes as aunt and niece, making their bodies react similarly to the drug. I believe Gin may have known early on that Sherry was alive and was aware of Kudo's survival as well. Therefore, Gin and the boss know that Mary will survive this drug as well. Gin likely hinted this to the boss and orchestrated events to leave Mary alive. Why? They will use Mary as a bait to retrieve the antidote.

If BO were to capture Sherry, she’d likely refuse to cooperate. If they killed her, they’d lose their only chance at the antidote. Raising Sherry, funding her studies abroad, and investing years in her research suggests how vital she is to the boss’s plans. Killing Kudo would also be out of the question—Sherry’s guilt over Kudo’s predicament is what drives her to work on the antidote. If Kudo were killed, Sherry might even commit suicide, leaving BO without their much needed antiodote.

Mary’s shrinking seems to be a part of the boss’s larger scheme to manipulate Sherry. By targeting Mary, someone closely tied to Sherry and the silver bullet Akai, the boss ensures that all roads lead back to Sherry. This clever and cost-effective strategy leverages Mary’s condition to force Sherry’s hand, ensuring she stays within BO’s reach. In the process, it draws in powerful agencies like the FBI, CIA, and MI6, all of whom may unwittingly aid the boss’s agenda. In the end, the trap wasn’t just for Mary—it was a strategic move to draw out Sherry and secure BO’s ultimate goal: the antidote. This theory further supports the idea that Mary and Gin might be related, potentially as mother and son. Otherwise she wouldn't have been alive until now.

Hello anon! Just so you know this was a delightful surprise to find in my inbox today :3 I think I reread the whole thing like four times before even thinking of doing anything else djsjfsk I love theories so much💥💥💥

(Everything else is under the cut because I ended up yapping too much. I'm so sorry)

I really like this theory, especially since it indirectly covers for the fact that Masumi (partly due to Mary's orders as she's getting more and more impatient) hasn't exactly been subtle in her attempts to get the temporary antidote and has generally been very liberal with the information she has about Conan and Haibara's identities, talking about it in public and even getting overheard (granted, Subaru isn't the issue here, and it's not a guarantee that she's being tailed 24/7 as that would be a bit of a hassle to keep up, but still). One would think that they'd have been found out by now, given that the BO is now fully certain of Masumi's existence and relations (Vermouth on the Mystery Train my beloved & beloathed... Girl why r u so evil) and, as minimal as it is, she does represent a threat, but nothing has happened to either of them yet.

I do think that the point about the BO's decision to use the poison is a little shaky, seeing as it's been explicitly stated to leave no trace on the body— which actually fits pretty well with their motto, and we do glimpse a pretty long list of people it's been used on a few times throughout the manga (we only see a few names, but it's speculated to be much longer than what is shown), so it would seem that the BO has been using it semi-regularly when they wanted more down-low executions.

There was also no guarantee that Mary would react the same way to the APTX even with a possible genetic advantage observed in Shiho (and without knowing exactly what they were looking for, I'm fairly sure trying to compare the two's DNA in order to confirm their theory would be really difficult if not outright impossible in such a short timespan, and that's if you don't consider the absence of the person who knows the most about the APTX in the first place and could have sped things up if she was there). <- sidenote: I feel like I may have misread this point of the theory, so my interpretation and objection could be completely off bc it's not what you were talking about djsnfns

That said, I find the point about ensuring a direct line to Sherry through familial relations very interesting, in the sense that it made me stop and ask myself how she would react upon finding out that she has more living family still, but over half of them are people who she may see as having caused her grief/major discomfort at best. Would her wish to connect to her family be stronger than her self-preservation (along with the fact that she doesn't really know these people and therefore has no emotional attachment to them, not even as abstract idealized family)? I'm genuinely not sure, but the BO banking on this, possibly because having essentially groomed her they know her weaknesses best, is very juicy.

Honestly, thanks to that post (and a few delightful conversations about it), I do think that making Mary and Gin related in some way would be like. Really really funny. It'd also probably piss off a lot of people, but it'd be so funny.

And, given Gosho's magic retconning powers, I have come to the conclusion that Gin being Elena and Mary's brother that nobody ever talks about for some reason would be peak comedy. It even gives the whole "Elena and her husband received an offer they couldn't say no to because it'd let them continue their research" thing a new layer of context if you consider that Gin may have been the one who brought them to the Boss's attention.

This is also brought to you by my superficial genetics liker ass who says "Tsutomu's hair is brown and Mary's is blond. Brown is a dominant gene while blond is recessive, so unless Tsutomu's genotype was heterozygous (which we unfortunately can't know without the rest of his family tree. Also Gosho only seems to care about genetics from time to time) Gin should also have brown hair".

Also it's infinitely funnier if this is all a very complicated example of what Cain's Instinct looks like. Imagine playing the long game for literal decades because you want your siblings dead but it should also wipe out the rest of the family. Insane

[prompt-master]

The continuity of this show is so dead man, you've got people using smart phones in a pre-conan flashback, and Ran has a flipphone despite it being established that her flipphone was a gift from Shinichi so they could stay in contact while he's "missing"

[suleikazuleika]

I don't have access to Movie 27, so this theory might already be debunked.

But I'm more convinced then ever that Kaitou Corbeau is a Chikage + Kudo Family Team-Up.

If the whisperings I'm hearing about the reveal are true, then the three of them have an invested interest in seeing Kaito retire as KID.

I mean, it wouldn't be the first time Yusaku and Yukiko pulled some really sketchy shit. Remember the "Conan Edogawa Kidnapping Case" from the early volumes? They straight up kidnapped their son to prove a point.

That said, I don't think that's their primary reason behind Kaitou Corbeau. I think they're searching for Toichi Kuroba. What better way to lure someone out than to wear their face and use their own techniques?

If Toichi's body was never recovered after the accident or went missing, then of course it would raise suspicions from his loved ones.

It would explain their rather frequent trips overseas, especially considering how shit in going down in Japan right now with their children.

But if Toichi is alive, why hasn't he shown himself? I have a few theories:

Option 1) Like Shinichi, he believes that his loved ones will be safer if both they and the assassins who targetted him believe he's dead.

Obviously, this backfired spectacularly with Kaitou Kid's return. I love Konosuke Jii, but I'm starting to believe he royally screwed up Toichi's plan with his desire for revenge.

While he did not want Jii to tell Kaito of his alter ego, Toichi clearly had plans on telling his son himself. He left a voice recording in the secret room, which probably detailed his motivations and a warning not to follow in his footsteps. Unfortunately, that message deteriorated over the 8 years since his death.

It is possible that around this time, Chikage and the Kudo couple were tipped off on a Toichi sighting, thus forcing their focus elsewhere.

Option 2) He was seriously injured in the accident, and now believes his presence poses a danger to his loved ones. This one would be incredibly tragic, but sometimes a traumatic injury can cause a personality change like increased bouts of anger.

Even if these concerns were unfounded, I don't see Toichi as the kind of person who would take that risk with his family. Combined with concerns over the organization, it paints a bleak picture.

Option 3) Toichi is the series' main villain and a bad father. Just as his final message could've been a warning to Kaito against becoming KID, it could also be an invitation to inherit the role.

The adrenaline rush of a successful heist could have proved addicting, and Toichi could have used his assassation attempt to leave his shackles of responsibility behind. He could have graduated to an even more dangerous phantom thief persona.

Remember how there is 8 Night Baron books? One for each year since Toichi's supposedly death? And Yusaku has never revealed his identity, not even to his own son...

While I think this last scenario is the least likely, it would certainly be the most dramatic. It would force Kaito to rethink his whole career.

[lupizora]

I still can't stop thinking about the M27 teaser trailer. Honestly, when the very first teaser (that had played after the credits of M26) became available online without subs or translation, I thought the new movie might have an amnesia sub-plot. Like something happened that would make Kaito forget everything related to Kaitou KID and Heiji and Conan would have to deal with that along with the rest of the movie's plot. Of course, that idea was shot down from the translation, but I got attached to it for fanfic purposes lol.

So, after seeing the new teaser, that first silly impression is slowly becoming a fully fledged fic (is it HeiKai, HeiShin, HeiKaiShin, idk haven't reached that far yet 😅)

Like yeah, I want the dissonance of KID being aware that Heiji knows Conan is Shinichi, and Heiji not really knowing that Kaito looks like Shinichi (because Kudou never tells him any details that are not important for the task at hand). If anything, Heiji probably heard that's an option from Kazuha because Ran kept complaining to her about all the times KID had disguised as Shinichi before (or given recent manga spoilers, even from Hakuba and his suspicions).

That's why when Heiji unmasks him by cutting through his top hat, KID still slips into his Shinichi disguise (after doing it so many times, I'm convinced he can without a mirror at this point). Not because Heiji will believe it, since Conan is right there, but to buy time.

Heiji, of course, is pissed off about it, and given the whole Kidzuha fiasco, he wants to cut KID in half more than play along.

But KID says that he can't help it if disguising as the people that Heiji loves will keep him safe from his wrath. While Heiji has a crisis over what kind of love does he mean, KID makes his escape (recently stolen sword and all). Heiji throws his sword after KID, like a javelin, and unbeknownst to him, actually hits the handglider. KID drops out of the sky, fate unknown.

Next day, Iori shows up to bring Heiji to Momiji's temporary place (will the plot remain in Hokkaido, dunno) as there is a sensitive matter to discuss. Turns out, they found KID somewhere. While they recognize this person looks like Kudou Shinichi, it's still pretty obvious the clothes he had been wearing was KID's outfit. Heiji manages to convince them to bring Conan along, since the suspicion for KID's real identity will fall on his "cousin" and who's better to dispel these kind of rumors.

What neither of them expects when they are left alone with KID though is that one, he doesn't know who he is; two, he doesn't recognize Conan; but three, he remembers Heiji.

For now, I think the sword has something to do with this temporary amnesia (like holding a part of Kaito's soul or sth) since he feels more like himself whenever he's close to it. I also like actual magic shenanigans in the DetCo universe because it means I can make Akako appear (if the magic is real, she can exist. That's my rule lmao).

But that's pretty much what I have of this idea.

[moonsunpenguin]

Phee's Version of Events and Why it's Sus

We have been shown what Phee thinks Tan/New did (given that he’s the one that’s saying it to Jin and not like the typical flashbacks we were given, it gave the feeling that it’s just his character’s deduction of how things played out. Basically just his version of the events. Or I could be wrong and, like a lot of the audience, was reading too much into the show).

One thing that stood out to me aside from the fact that he was never there when he thought Tan/New set up the trap for Por or the wire for Uncle Dang, nor have we been shown that they talked about doing those things. How he could’ve known that’s what happened is just weird. Or maybe he’s just really good at investigating, his father is an investigator, maybe he got the skills from his Dad. For those two incidents, he may have noticed that Tan/New was not accounted for when those happened. So, he gets a pass on those two.

However, him knowing that Top was drugged was where he lost me. Sure, he could’ve deduced once again that Tan/New did something to Top since he was the last one with Top before Top “disappeared”. But how could he know Top was drugged? The only people that knew were the ones that were in the house AFTER Top came back from the temple. Phee and Jin never saw Top. They were looking for him before the masked killer attacked them at the temple but they didn’t know it was Top. So how could he know that Top was now drugged and hypnotized to punish everyone that hurt Non?

If there’s one thing police procedural dramas and true crimes taught me, it’s that only the guilty ones would have knowledge of specific details on a case that were not revealed to the public yet. So take that as you will. 

[laststardust-sayonarajudas]

Someone mentioned about Akai Shuichi being a TA/ Akai being someone from engineering degree.

Yes. 100% Akai must've been from the STEM degree but he does not have to be in the engineering degree to pursue a doctoral degree in Japan. You just have to have a relevant master's degree for doctoral degree. (I am sure by orders of magnitude) because in Japan for you to get into doctoral/ masters studies you have to pass the entrance exam. Yes, they make you sit on an exam that is notoriously harder than PhD qualifying exam (an exam grad students need to pass before them becoming officially a PhD candidate) and then decide if you are worthy for their program or not. So he doesn't really have to come from engineering background. I have a friend who got admitted to Earth Science for their graduate school despite doing Physics for their undergrad and only took one or two geology classes. I know someone from a top Japan univ who had an engineering background and did masters in Physics -- that pure physics.

What you need to apply for doctoral program in Japan is a master degree mostly. That's because doctoral students are expected to do research therefore they are not covering courseworks anymore. Unlike US PhD program where you spend initial 1-2 year to complete courseworks needed for qualification exams and then continue the next 3-5 years researching, Japanese program makes you take that master courses, do 1 year master research, defend your thesis then you can apply for a PhD program.

Also for TA job it is not really a requirement since Japanese students pay for their tuition (except some universities -- but most universities require you to pay for that). Fundings can come from your Principal Investigator (PI) aka the faculty member that you are working for who is willing to make sure that you don't fork your own money to pay for your education or university offering a TAship but it is really optional (in my uni I only know one or two doctorate students who choose this TAship and they still have to pay for tuition).

That's why Gosho can easily make him to be a doctorate student. Afaik (again this depends on universities) doctorate students do not really attend taught classes in Japan. He can easily skip those classes.

[detco-hell]

he's fine :)

[episode 523 - What She Truly Wants to Ask]

[fisherrprince]

the problem is I’m such a staunch believer in the slow buildup, the earnest enjoyment of meandering through terrible story decisions and weird nothing subplots to build up into a conclusion that explodes out from all that as fantastic storytelling and intrigue based on all that buildup, such that it makes it necessary to get through all that or you’re missing something essential, that I’m also a terrible person to talk to about what makes a story good. I can tell you plenty of what actually makes something tight and well-written and all that technical speak but how could anyone take my advice when I so so so love excruciatingly long unnecessarily complex fumbling and weird nonsense that spirals into, inexplicably, weird nonsense that makes you cry your lungs sore

[kakapim]

I've seen people ask "Why didn't Yuusaku investigate his brothers murder" and consider it a plot hole, but after some consideration I think it could be explained. My reasoning is:

1- Yuusaku knew Toichi had beef with other more dangerous criminals

2- If they didn't bother killing a world famous magician, they sure asf wouldn't hesitate to kill an author, too. If he did die, he would leave a very young child and his wife. And nothing would be solved.

3- We don't know how much Yuu knew. Like yeah it was obvious Toichi had beef with other, more dangerous criminals, but there's no guarantee Toichi told him about his night life, if at all. If MK organization wiped out all info about the case and called off the police investigation, it would be very hard to find a lead again. And as I said, doing so would surely bring unwanted attention.

Remember that the first KID was doing it all for shits and giggles before the whole pandora ordeal. Ik Yuu is one of the smartest mfs in Detco, but would he know about the gem? I mean, the only reason we even know about it is because they specifically told Toichi to find it. Otherwise, it would be impossible to know unless he found someone who works for them.

He might know it *now*, since Toichi and him are in contact with eachother, though. But again, we don't know how long Toichi went without telling people he was alive.

He even might have told him to not dig into the case because it would be dangerous to both of em. Unfortunately that DOES bring out the issue of Toichi being a terrible father, because it essentially means he went "don't worry bro, my 17yo traumatized son will solve this 👍" and Yuu was... fine with this ??

Like I understand not opening up an investigation or calling the fbi or whatever, since it would be dangerous to everyone involved- but not telling Kaito his pops is alive is just cruel. Kaitos already in danger anyway, so what's the point?

[incorrect-kaishinshi]

Ayumi: So if I move my horsey here... Isn't that checkmate and I win?

Conan: ...hmm.

Ayumi: Well, is it or isn't it?

Conan: You know, I think this is a good stopping point. It's your first real game, I threw a lot of information at you.

Ayumi: No, your king is trapped. He can't go here because of my lighthouse. And he can't go here because of my pointy head guy.

Conan: Like I said, "complicated game".

[jaehattori]

Movie 29 prediction is that it’s shinran related :0 AND EVEN BETTER MY THEORY IS WE GET AN ACTUAL SHINRAN DATE!! IN HIS BODY!! I don't know i just wanna see then together. Also I feel like we don’t get enough shinran content but that’s just me yk 😭