The murderer of the Setagaya Family is out of options: What most likely happened
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- Опубликовано: 21 мар 2024
- Setagaya Family Murders: What most likely happened
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I think this was a thrill kill. The family was isolated. I think whoever did this stalked them. A robbery gone wrong doesn't really account for the amount of time he spent in the house. A good explanation was that he enjoyed it and enjoyed invading their privacy. Money was taken because it was there, and it was another way to violate their privacy
Seems a little extreme for a robbery gone awry. Potentially more like a mentally disturbed drifter sounds more plausible.
Exactly. Mental illness, drug addiction etc. This attack wasn’t planned or executed by a sophisticated criminal. I could even imagine that the intruder just left when the neighbor was at the door. That’s why valuables were left behind.
@@peoplelikefrank
But he took his time sounds like a cold blooded psychopath
Then again RDJ the famous actor of Iron Man while high on drugs broke into his neighbor’s house and slept in one of the beds
I got scared watching this, the poor family must have been terrified x
Some say he's a pro killer, but a pro wouldn't use a store-bought sashimi knife. That's why the knife broke and he hurt his hand. He also wasn't fastidious about leaving his DNA behind.
14:35 This is completely incorrect (no fault by the video creator, but by the media's reports). The maternal haplogroup found from the killer is actually one of the most common maternal haplogroups found in South Korea, with 1 in 4 people having it. The implication that it was European in origin was very off based and uneducated-perhaps a mistake made because using DNA to detect ancestry was in it's infancy at the time of the crime. However, the correct analysis of the DNA would imply that the killer was a Korean immigrant.
Professor Mizuguchi of Tokai University's Department of Forensic Medicine, who actually conducted the DNA testing on the criminal, concluded that the criminal's maternal was not of Japanese descent, but was most likely of European descent.
@@marutsuno the amount of genetic material and forensic evidence that was collected is crazy and yet they haven't identified a solid lead
@@marutsuno Then he was wrong. This is common knowledge, not a personal opinion. Haplogroups are not the same as autosomal DNA (which tells us ethnicity). For example, my family is from Denmark and northern Germany, but my haplogroup is T, which originated in the middle-east. But by no means does that make me middle-eastern or Asian-for the year it "originated" out of the middle-east was 25,100 years ago when Anatolia was mostly hunter-gatherers (and not Turkish people or Arabs yet). When you look at my specific haplogroup (T-L446) which branched out from T in 6000 BC, you can see it is found in small traces in northern Germany (Mecklenburg; where only 0.8% of people have it), but is still mostly found in the Mediterranean and middle-east. If you were to try to solve a murder based on this information, you would be looking for a dark, olive-skinned male, and not a light-skinned blue-eyed Scandinavian looking-man like myself. And that's my paternal haplogroup-mtDNA maternal haplogroups are even less reliable for ethnicity! Haplogroups are passed down through the paternal and maternal side for tens of thousands of years-so they are normally not very good for telling us someone's race or ethnicity and what they look like.
@@baller84milwAs you can see from my comments, I'm not talking about whether tracking criminals based on haplogroups is effective or not. I'm talking about DNA analysis results. You said that the maternal haplogroup found in the perpetrator was actually one of the most common in South Korea. You also said that the correct DNA analysis would imply that the culprit was a Korean immigrant. So, in response to that, I simply stated that this is not the case. And it is true that the test results showed that the culprit's maternal haplogroup was of European origin.
By the way, police are considering the possibility that the perpetrator's distant ancestor, who goes back several generations, rather than his immediate ancestor, was of mixed European descent. For this reason, police are carrying out a wide-ranging investigation, including the possibility that the culprit may be purely Japanese or of Asian appearance.
@@marutsuno Yes, I know exactly what you said, given that all you did was regurgitate the most popular beliefs about the case without providing any new insight or interpretation of these details. I searched for maybe 30 minutes trying to find my source but couldn't. It was maybe 2022 and I was reading a Japanese article or forum post, with the aid of Google translate, and someone had said that the mtDNA haplogroup was actually very broad and occurred highly (or originated in, I don't remember) in Europe, but was also very widespread and found in Korea. According to them, given that the maternal haplogroup and paternal haplogroup were more common in Korea, along with other pieces of evidence (i.e. his shoes, clothes being sold only in Korea, with sizing only used in Korea, etc) they concluded he was likely Korean. The 1 in 4 figure is something I must've misremembered being from the mtDNA haplogroup, but which is really about the paternal side. When I was searching I came across a detailed websleuths forum post on the case, where a guy who wrote a book about the case states that the Y-chromosome haplogroup was supposedly made public (Haplogroup O-M122), but the maternal haplogroup never was.
So, ultimately I don't know. Regardless I think my subsequent point stands, being that haplogroups are too broad to draw any conclusive evidence from-and the DNA technology in regards to ancestry, race, ethnicity, etc. was in it's infancy at the time (2000-2001). AncestryDNA and 23andMe didn't even start mass marketing consumer DNA tests until 2012-2015. As well, the technology to determine someone's haplogroups in the first place is constantly evolving, meaning for all we know they might not've gotten the maternal haplogroup correct back then. I mean 23andme alone has made 3-4 updates to their algorithm for determining haplogroups in the last 8 years. The reference panels have also increased drastically over the last 25 years, which helps us make sense of the data, and categorize people better, for example if more widespread consumer market testing has shown the mtDNA haplogroup in question actually is relatively common in Korea or Japan. Also, side note: but if the DNA samples they have are well-preserved I don't know why they don't just sequence it and do an autosomal DNA test-which ultimately would give us a good idea of what ethnicity he was and what he looked like. There are many DNA testing companies across the world that would do this for free for the publicity alone.
Its incredibly frustrating and minboggling that with the amount of evidence left behind and the careless nature of the perpetrator not even one suspect has been identified!
He's not a Japanese native
Time to bring in the FBI or something. If the Japanese authorities can't solve a case with the most evidence of any case I have EVER heard of, then they need some help.
@@sabrinashelton1997 FBI has no jurisdiction in Japan. And they have enough to do on the home front where they belong.
I highly doubt an angry skateboarder did this. Just way too brutal and calculated. I have a feeling that if the person who didn’t wasn’t already a serial killer then they are now, and just haven’t been caught yet which is terrifying. This kind of behavior is behavior that would for sure be repeated by the same person.
Finally, an intelligent analysis 💯
VERY intriguing story. This case is so bizarre and needs some resolution! Thanks for posting. Get that DNA from the POOP!
They did but zero matches in the system
@@Narco.Trafficante I thought I heard somewhere that the Japanese authorities wouldn't run a genetic genealogy due to "ethical" or "policy" reasons. Idk???
Excellent video
I find it hard to understand why the little boy was strangled and the rest of the family were stabbed. Interesting, but I don't know what it means.
He was the original target of the psychopath thats why. It was a sadistic killing.
The boy was his first target and had to be hushed thus strangled then the element of surprise was gone with the father scuffle ensued knife used finished off the Mother and Daughter then causally takes a dump no flushing eating some snacks as if he’s been hungry or on trip plus sand residues traced to two locations California air base …..
No ransacking no arson no clear motive apart from a planned hit from outside Japan
The Killer was a hitman no records in Japan perhaps of American nationality but such a callous act of leaving evidence just ticks me off …..
I’ve always been curious about the Nevada sand. At first I thought it might have been a soldier on visit to the Japanese bases but I’ve also wondered if it wasn’t someone who stole items off people at connivence
Genetic genealogy? It seems like a logical idea. Also, have they considered a dependent of someone stationed at a US military base?
Its not allowed in japan.
@@peoplelikefrank☝️ but thanks for answering my question! Bet they’ll change that soon enough.
What about the sand found ? Wasn't it from a military base in the USA? Suggesting a possible link to someone who is or has family in the military?
You are correct. But, as someone that actually lived on a U.S Military base fairly close to where this happened, I believe the militay connection was a red herring. It's a bit hard to explain but the idea of anyone from the base randomly ending up in Setagaya makes no sense to me. When U.S military people go out "on the economy" (i.e off base) they stick to places that speak English or that have things to do (like shopping, bars, etc.). That area of Setagaya had (and still has) absolutely nothing around worth going to and is in the opposite direction that someone would take when returning home from the areas in Tokyo where people would actually want to go. If someone from the base went there it definitely wouldn't be random. That along with things like the handkerchief (Americans don't use them), the clothing style and even the killer's ability to work the stove (the stoves on American bases are American appliances that use farenheit but the Japanese ones operate differently and use celcius so they would be confusing for someone that hadn't used them).
Instead, my guess is that the person bought the bag with the sand from a thrift shop near a U.S military base either in Japan or in Korea. Military people often sell their stuff to thrift shops off-base because a lot of them pay pretty good money for "American" goods. I remember my mom selling some of our second hand clothes in good condition for more money than she paid for them at a thrift shop close to the base we were at (Camp Zama). If I had to guess, I would go with either an ethnically Korean Japanese national or a student from Korea that was attending a Japanese university.
The bag was probably stolen or recovered from trash or from a thrift store.
@@miadavis4837 thanks for the reply and admirable writing. I may be wrong, and my memory is fallible but I heard the sand came from a base in the USA? Did I get this wrong?
@@shortminute I'm almost positive that you're correct. I know that a lot of people have posed the American military theory because of that pack and I'm pretty sure it was because of the sand inside the pack and not the pack itself. The only reason that I said it could have come from a thrift shop in Japan or Korea is because there are American military bases in both countries and, since the killer was apparently of Korean descent and owned clothing sold in Korea, it could be that he picked up the pack (with the sand from the U.S base inside) in Korea and then brought it to Japan with him. Sorry if that wasn't clear.
Edwards Air Force Base in Southern California. This is a strange clue. No doubt they have cross referenced people who fit the genetic profile that served there and have come up empty so perhaps it’s not related to the killer… directly.
i hope this family gets justice! how sad they were just living their lives and were attacked…
There's a podcast that came out recently called Faceless, it was very interesting.
Hey, I made that podcast. Thanks, Melanie!
The evidence sounds there to mislead.
This case has always puzzled me. I don’t buy the robbery gone wrong theory. That family was targeted. Was the wife having an affair? Did the husband have a gay lover? There’s simply no reason to kill the kids even if it was a botched robbery. Someone was out to get revenge. I don’t buy skateboarders or bike members either.
It’s a very intriguing case because it goes in both directions of a targeted, calculated hit and also a random murder. It seems like more of a planned hit with some purpose but then why hang out for hours and leave so much incriminating evidence? It’s just all over the place. This killer is either an evil genius, leaving all kinds of red herrings or simply the dumbest luck killer that happened to pull off an incredibly sloppy crime and seemingly get away with it.
@@andre595zero exactly, if it were a robbery or a planned hit, then after it happened the assailant would have left. Mission accomplished, time to move on and not get caught. The fact the perpetrator stayed in the house, raided the fridge, took a nap, changed his clothes, rummaged thru the house, took a dump, and accessed the internet on the computer, tells me this was personal. This was a statement. If I can’t have you, and live in this house with you no one can. It was someone either the wife or the husband knew. Someone had a secret life. That’s my “what most likely happened.”
That wasn't revenge or domestic obviously. It was clear as day a targeted sadistic psychopath making his first serial killing.
@@Narco.Trafficante a serial killer by definition means multiple killings unusually following a similar pattern or MO. Where are the multiple murders in Japan similar to this one? There are none. Serial killers are opportunistic killing at random. Generally focusing on a certain type of victim. By your own definition you said the family was targeted. I agree. Why? I would look toward the parents for a possible motive. The actions of the killer after the murders is what’s so curious here. Most killers commit the act then leave immediately for fear of getting caught. This one did not which suggests to me a level of intimacy with the family. It was neither a contract killer or the work of a serial killer. And it’s doubtful it was kids from the skateboard park. I’m not sure the local law enforcement was equipped to handle such a brutal case. Japan isn’t known for violent crime.
@@thomasmoshier3920 There were none similar because the killer left japan afterward and hasn't been back. It has all the hallmarks of a psychopath sadist. That's why the son was the target and was killed differently and targeted first. There's zero domestic in this case. Psychopaths and sadists never know their victims. Normal killers flee out of fear of being caught. Some psychopathic killers, especially young killers with sociopathic tendencies, dont have that same fear of consequences and understanding of urgency. That's exactly what happened here.
18:20 how would her arrival explain the killer’s activity?
This question still needs answered. Probably just a stupid mistake in the AI reader. Doubtful it was even a real narrator
Ok wait....why did the killer bandage the little girl ? Am I alone in thinking that this is highly bizarre? I am half tempted to suspect that the Killer had intended on possibly selling the little girl into slavery, or even more disturbingly, perhaps he had wanted to keep her for his own sick Pleasures before ultimately killing her afterwards? I wonder if maybe the idea occurred to him too late, and so he tried in vain to stop the bleeding in order to prolong her life a little longer. I am really bothered by tbjs particular detail for some reason and find the entire case incredibly disturbing.
It wasn't the killer, it was likely the mother after both had sought safety in the attic/loft after witnessing the father being attacked. This is due to the fact the killer is unlikely to know where the first-aid kit was kept, among other reasons.
I think the sand was mistaken to be from the grip tape. Where I think the grip tape was imported from? California where skating started. Just a thought
I don’t think it was a robbery gone wrong. I’d say most robbers don’t kill unless forced into a corner. He watched the house, saw their routine, and that’s why he entered through the second floor window. I think he was going for the part of the family first that would most likely scream or make a noise and try to do it quietly.
Sounds like a case of funny games..
Unsure why clothes weren't kept for future more advanced dna testing - here in US we have solved many cold cases with these techniques
Feels like a personal attack on the dad to me
Why can’t they use the tons of DNA to do a familial search? Is there a law against that in Japan? If so, they could try the US🤷♀️
Why kill an infant for a few bucks? Why wipe out an entire family when you could have entered when no one was home? That was personal.
What infant? There was no infant.
@@Milkman4279 The little boy.
It may not have been personal either.
Note that this family happened to live in a nearly ideal area for a psychopath to target for his own enjoyment.
The location happens to be remote and he demonstrates behaviors similar to serial killers.
He scoped the family for at least a week, had his own kill kit of sorts, and the family never recognized his vehicle when they saw it.
I'd have to agree with one of the top comments that this was probably a thrill kill.
We're usually so fixated on trying to understand a relatable motive that it doesn't occur to us that sometimes the motive just won't make any material sense to us.
It was personal. A sadistic psychopath making his first impressions
There must be a connection but yet again the mixed heritage same residues from a military base the brutal murders without taking any prisoners or living survivors for some sick enjoyment then goes to take a shit no flushing eating watching chilling …….
The DNA is even more mysterious as to why would a mutt with no history on Japanese records suggests being too young or he got there from somewhere
Young fit mutt of psychopathic tendencies……
The longer a thing takes to be solved the more likely that the guilty person is a rich person or even more likely a cop.
Or likely a foreign national possibly from South Korea and there isn’t any data on the perpetrator because he was only in Japan for a short period and immediately left the country.
US military personnel most likely@@andre595zero
Where exactly did you find this factoid?
Was it extracted directly from Uranus?
Neither. A sadistic psychopath who was in the country with his parents.
Or a military brat with very good connections
Sounds like LSD
*US military
No, a usual sadistic psychopath making his first impressions
Def a personal vendetta. Rest in paradise to this family ❤
It wasn't. It was a sadistic psychopath making his first impressions
I wonder if there was paternity testing done for each child. Someone strangled the 6 yo-a very up close & personal death & seems like someone who’s out of control jealous, leading to every persons murder. Maybe Yasuko was having an affair or she had a stalker (known or unknown), an ex maybe even, who is unnaturally jealous. Could be on the husband’s end too-a woman scorned & all. Stalkers develop infatuations with ppl sometimes unknown to them. It’s always possible it was a stranger to the family but he was watching/stalking so much, he *kind of* wasn’t a stranger, in his mind.
Either way, I think the husband or wife had an affair & a “fatal attraction” developed outside of the marriage & possibly even outside of Yasuko & Mikio’s knowledge.
The perp clearly was not worried about leaving DNA behind, which makes me think it was a one time perp, with no criminal background. Hence, no prints/bloodtype/DNA in the system. If genetic genealogy is allowable in Japan, that’s obviously their best bet! Not all countries believe it’s an ethical way to solve crimes though. Someone knows who did this. FR. They’re either scared & waiting til the perp dies to tell police, or the perp isn’t close enough, emotionally, to other humans & he really hasn’t ever told anyone! One last theory…it could’ve been a hired hit & the perps got the wrong family. 🤷♀️💔
It doesn't look like a robbery gone wrong case. A robber whether gained or failed in his robbery attempt will not stay back at home doing all bizarre activities.
Looks like a revenge killing related to property or Husband/ wives illicit relationship. Or may be an act of a psychopath? If he is a psycopath why didn't he repeated similar crime elsewhere? Or did he flee the country?
Anyhow the children being targeted is really tragic.
I wonder if there are any similar unsolved crimes in korea since the person is more than likely of Korean decent! And assuming he did go back to Korea he more than likely kept killing!
i feel like the mother hired a hitmen. just my opinion
A hitman? Really? What hitmen leaves behind blood, dna, stool, fingerprints, clothes, and then takes a nap before leaving???
what mother?
For her grand kids to get brutally deleted
You’re out of your mind
If the parents got deleted then maybe but why the kids ???
Defo th motorcycle gang.
Definitely not
Where are the motorcycles?
It was a homeless drifter who had been sleeping in the park
That doesn't line up with the fact that zero DNA was in the system. A homeless drifter would've been a japanese native
if this was a homeless drifter, his clothing and even the bag could be irrelevant. These could be items that he found or stole. Especially the strange sand found within.
The way the drifter acted post murders suggests being a wandering loner but why the killings it seems so brutal and not much valuables were taken
The guy picked the targets and the motives are as mysterious as the DNA of the killer
I feel like it's a young teen that was either a skater or biker tryin to impress his friends. I suspect a mixed youth maybe with a relative in the military (since he had sand from Edwards air force base in his bag). It feels like a mixed youth who was picked on and trying to impress his friends. Maybe started off with only robbing and then ended up killing the family maybe because he projected his feelings on to them
He wasn't "mixed race" he was Korean. The sand found was also found at the skatepark-so the air force base thing seems highly unlikely.
@@baller84milw I thought narrator said the dnsa test found not just one ancestry and I've seen other videos on this crime where they announce the culprit is more than one race, also this narrator does not come out and say straight Korean only, other races are mention with Korean only being one of the backgrounds given.
@@sjeabee5345 Yeah, I know, and I'm saying that's wrong. The haplogroup was "thought" by the police to be European back in the year 2000 when the crime happened. Since then, with more widespread DNA testing and better understanding of haplogroups, we now know it's actually a very common Korean haplogroup. So that, added with all the other things (him washing his clothes like Koreans, only having clothes sold in Korea, etc.) make it much more likely he was just Korean.
That doesn't match up with the killers profile in no way shape or form. The killer was a teenaged sadistic psychopath whose target was the boy.
@@Narco.Trafficante
Why the boy in particular?
He took out the whole family
It’s something more personal
You can be sure it was US military personnel that are responsible for this heinous crime .
Where exactly did you find this factoid?
Was it extracted directly from Uranus?
Their teen. Not them
Why are you so sure?
Military brat more likely
Best bet
Motivated by money, yet substantial amount of cash was left in the house? Make this make sense
Money was probably cash change to GTFO of the town ASAP