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Must not Search

Words that have been recommended to not be search.

This article contains shocking and offensive content. Read at your own discretion.

Note that these can vary to tame to extreme depending on the person.

Outline

The contents of this includes sites, images, videos, ect. of erotic (sexual), gory (R-18G), ghost stories, stories, surprises, etc.


However, some of them may cause damage to your PC, such as browser crashes caused by PC viruses or web scripts. Therefore, unless you have sufficient immunity, tolerance, and knowledge of personal information leakage and security, you should not search for them out of curiosity (you may need to search for them for academic or research purposes, but even in that case, you need immunity).


If an image, video, or exe (a PC executable file) is hit, the viewer will suffer some kind of damage. Genres include PC damage, gore, horror, occult, radio waves, insanity, depression, or deformities. In 2014, TBS aired a one-off TV program which examined search terms and urban legends.

Aside

In recent years, videos of people searching for words they shouldn't search for have become popular on video sharing sites. There are many different types of live search videos, so if you're curious about search terms, you can watch along.

List

In this article, only items for which pixiv articles exist or going to (even if they are not included in the Must not Search wiki) are listed.


The contributors, administrators, and authors of this article are not responsible for any unpleasant feelings you may experience as a result of searching.


About Genres

Hall of FameParticularly well known in the Japanese language.
Culture ShockA culture that overturns the common sense of others. Note this may come off as discriminatory.
DepressionTragic content.
OccultUnscientific.
DeformityUnusual appearance. Can also come off as discriminatory.
GrossViolence and cruel descriptions and expressions, etc.
TruthAn incident or event that actually happened.
Organism Creatures with unusual characteristics or abilities (fictional creatures are also included here).
NonsenseContent that is incomprehensible to the average person.
MysterySomething that is shrouded in mystery.
StoriesBasically, anything that can be laughed off.
InsaneInsane and antisocial behavior.
SurpriseScary images, malicious prank videos, etc.
PervertedDepictions or expressions of special preferences, etc.
HorrorDescriptions that stir up fear.
Mind BreakMaterial that causes psychological damage.
FoodFood or drink.
PC DamageItems that cause damage to computers.
R-18Items that fall under the category of adult content.
OtherItems that do not fall under any of the above.

OrderGenreDescription
☆V☆E☆A☆H☆HorrorDance music video by Barbapapa
A
Acorn WoodpeckerOrganism / GrossA bird that can effect people with trypophobia due to them making many holes.
AcrotomophiliaGross / DeformityThe fetish of amputees.
Ahenobarbus HenociedHorror / Mystery / Hall of FameWestern given name of a image of a gofun doll from a 2chan thread where the users edited her to be cuter. But westerns mainly don't know that and named it after a Facebook user's name using it as a profile picture.
Ai to Yuuki to KashiwamochiHorror / Hall of FamePuzzle game in the style of Yoshi's Cookie.
AmblypygiOrganismSpider, some have been sold as pets.
B
Backwards Girl: Endless Summer HolidaysR-18 / GrossA novel in which a girl is kidnapped, confined, and tortured continuously.
Brazen BullGrossCruel method of execution.
C
Human CannibalismGrossHuman eating another human.
Cat SoupGrossCruel but award-winning anime. This can also mean the manga it was based off of (see Nekojiru)
Chargeman Ken!StoriesA crazy anime that has a lot of things going for it.
Chick MixerGrossChicks in a blender.
Conker's Bad Fur DayGross / StoriesA parade of dark comedy and potty humor in a game developed by Rare Inc.
Running CirnoHorror / Stories / Hall of FameA video made in MMD of a creepy running animation of Cirno.
D
Darwin AwardsStoriesA tongue-in-cheek honor for people who died in a "idiotic manner" (unsusal).
Demodex FolliculorumOrganismMicroscopic mite that can only survive on the skin of humans.
Depleted Uranium AmmunitionDeformity / TruthImages of deformed children born due to radiation hit.
Der FlohwalzerGross / NonsenseA execution scene in Danganronpa V3: Killing Harmony.
Dnepropetrovsk ManiacsGross / Insane / Hall of FameTwo 19‑year-old male murders from Ukraine. Known as Ukraine 21 in Japan (In reference to the number of known victims).
Don't look for WallySurprise / Hall of FameA screamer flash game of Where's Wally (Waldo in North America).
DoragoryGrossA monster from the 7th episode of Ultraman Ace.
Doraemon the HorrorHorrorHorror parody of Doraemon by Hideshi Hino.
E
Ed GeinInsanity / TruthA murderer who was crafting with dead bodies.
Eight Feet TallOccultJapanese urban legend of a tall woman who abducts children.
EihortGrossA monster by H. P. Lovecraft
ElsagateGrossSocial issue on Youtube and Youtube Kids.
Eudocima TyrannusOrganismWhile not scary it's their larvae that is seen as creepy.
F
Fancy IslandHorror / Surprise / Hall of FameBrowser game disguised as family friendly.
Female SageHorrorCharacter from Dragon Quest 3 but looking up the word in Japanese also shows up a scary face of a woman.
Foot BindingInsanity / TruthChinese custom of binding young girls feet to a small size. It was seen as a status symbol.
G
H
Hamster HellStoriesStop motion cartoon by Lee Hardcastle
Hakkōda Mountains Incident Gross / Depression / TruthLarge-scale distress incident that occurred in Japan in January 1902.
Happy Tree FriendsGross / Hall of FameVery violent web cartoon by Mondo Media.
Headless MamiGross / DepressionA meme centering around Mami Tomoe's death in Puella Magi Madoka Magica.
Hydnellum PeckiiOrganismA mushroom that looks like it's bleeding all over.
I
IkigusareNonsenseFictional deformed idol group.
Insane SetStoriesJapanese McDonald's commercial of Sponge Bob toys.
Issei SagawaGross / TruthJapanese murder, cannibal and necrophile.
J
Jellied EelsFood / Culture ShockThe world's worst tasting food, originating in England.
Junko FurutaGross / Depression / TruthJapanese schoolgirl who was held captive for 44 days. The contents of this is very extreme.
K
Korean WarGross / TruthA war between North and South Korea.
L
LeucochloridiumOrganism / Hall of FameParasites that use snails as hosts
Linda³GrossOne of the few games given a 18+ rating on PC Engine
LampreyOrganismJawless eel with a with gross mouth.
Louis XVIIDepression / TruthA king of France who lived a tragic life.
LobotomyGross / TruthWorld's most dangerous surgery.
M
Magical DoctorSurpriseA Vocaloid song about drug abuse. It features a promotional video that flashes and spins violently.
Matsuyama Kyowa HospitalGross / HorrorMore specifically a harassment movement of shock sites disguised as review sites about the affiliated doctors.
Me!Me!Me!Gross / PervertedErotic, gory music video for Japan Animator Expo.
Mermaid in a ManholeGross / Hall of Fame4th movie by Hideshi Hino of the Guinea Pig series.
Mike the Headless ChickenOrganismA chicken who lived for 18 months after his head was cut off.
Momoiro UsagiSurpriseAn original song by Healing-P for Kagamine Len.
Mortal KombatGrossA brutal fighting game known for it's gory fatality animations. In a more scarier sense this had effected the mental toll of the animators due to the reference they have to use.
MopemopeHorror / SurpriseControversial music video almost falling into Elsagate territory by being heartwarming at first glance.
N
Nanase YuiR-18Name of a character from the kids anime Go! Princess Pretty Cure but also a name of a pornstar.
NarutaruDepressionKnown as Shadow Star in the US.
Natsumi Step!Depression / Hall of FameHorror web anime made in flash.
NeedlefishOrganism / GrossA fish that jump out of the sea and kill people.
Negimaru!R-18 / DepressionHentai series of Negima! Magister Negi Magi.
Nevada-tanTruthName given to a 11-year-old female murderer by people on the internet.
NingenOccultA humanoid creature from Japanese folklore.
Noroi-chanHorror / StoriesCharacter from the TV program Shakiin!
NugumuHorror / StoriesA Virtual Youtuber.
O
P
panappHorrorAn ice cream that, depending on how you eat it, can create a creepy face.
PennywiseHorrorClown character from the movie IT
Pingu 24th EpisodeHorrorAn episode seen so horrific that it has been banned in some countries.
Pipa PipaOrganismA frog that can trigger people with trypophobia.
Pokémon ShockTruthAbout the worst broadcast accident in anime history.
Popee the PerformerGross / Stories / Hall of FameCG' kids anime known for it's over the top violence.
Purple MirrorHorrorThe urban legend says that if you remember it until you are twenty, you will die.
Q
R
Rorochan_1999Truth14-year-old Japanese live streamer that committed suicide.
R
RoadkillGross / TruthAnimals killed by car.
Rosalia LombardoTruthKnown as the most beautiful mummy in the world.
S
Sada AbeGross / TruthJapanese geisha and prostitute who murdered her lover during the Showa Era.
Sasebo SlashingTruthThe event that Nevada-tan had partake in.
SCPHorrorA site that collects fictional monsters.
Shōjo TsubakiGross / StoriesMore specifically the anime adaptation known as Midori in the west.
Shuji TsugawaHorror / Hall of FameA character from one Detective Conan's more depressive episode.
Sky BurialGross / Culture ShockFuneral practice of being eaten by birds on mountaintops.
Sumo StickerHorror / MysteryMysterious stickers with two faces.
Squidward's SuicideHorror / StoriesSo called lost episode of SpongeBob SquarePants.
T
The Girl Who Trod on the LoafDepressionOne of Andersen's fairy tales.
The Headless Girl IncidentGross / InsaneA murder case that occurred in Aichi Prefecture in 1932.
This ManOccultA marketing stunt featuring a somewhat unnerving picture of a man's face.
Tiananmen Square MassacreGross / TruthAn incident that took place in Tiananmen Square, Beijing.
Toro on Holiday PhotoHorror / OccultA rumored photo of ghost in the game Toro on Holiday.
TrypophobiaGrossThe fear of holes, mainly many holes close together on say a body.
Tsunaka YurikoHorrorJapanese urban legend of a name that must not be enter in video games.
TtongsulGross / FoodAlcohol made from human feces.
U
Ultra-Super-DeluxemanStories / GrossScience fiction manga by Fujiko Fujio.
Username666Horror / Hall of FameHorror video by Japanese visual artist Piropito.
V
W
Waita UzigaGrossbizarre manga artist with his most known work in the west being Mai-chan's Daily Life.
William UtermohlenDepressionAn artist with alzheimer's disease most known of his portraits showing his decline over the years.
X
XXXR-18A term often use to mean porn.
Y
Yoshie KimuraHorror / StoriesMain antagonist of Death Forest.
You Are An IdiotPC DamageA flash virus that would open many windows.
Yume NikkiHorror / Depression / Hall of FameGame where you walk around in a dark dream.
Z
Zdzislaw BeksinskiHorrorWithin Japan it's rumored his art will kill you if seen 3 times.

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