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 Fame | Particularly well known in the Japanese language. |
|---|---|
| Culture Shock | A culture that overturns the common sense of others. Note this may come off as discriminatory. |
| Depression | Tragic content. |
| Occult | Unscientific. |
| Deformity | Unusual appearance. Can also come off as discriminatory. |
| Gross | Violence and cruel descriptions and expressions, etc. |
| Truth | An incident or event that actually happened. |
| Organism | Creatures with unusual characteristics or abilities (fictional creatures are also included here). |
| Nonsense | Content that is incomprehensible to the average person. |
| Mystery | Something that is shrouded in mystery. |
| Stories | Basically, anything that can be laughed off. |
| Insane | Insane and antisocial behavior. |
| Surprise | Scary images, malicious prank videos, etc. |
| Perverted | Depictions or expressions of special preferences, etc. |
| Horror | Descriptions that stir up fear. |
| Mind Break | Material that causes psychological damage. |
| Cooking | Cooked food or drink. |
| PC Damage | Items that cause damage to computers. |
| R-18 | Items that fall under the category of adult content. |
| Other | Items that do not fall under any of the above. |
| Order | Genre | Description |
|---|---|---|
| A | ||
| Acorn Woodpecker | Organism / Gross | A bird that can effect people with trypophobia due to them making many holes. |
| B | ||
| Brazen Bull | Gross | Cruel method of execution. |
| C | ||
| Cat Soup | Gross | Cruel but award-winning anime. This can also mean the manga it was based off of (see Nekojiru) |
| Chargeman Ken! | Stories | A crazy anime that has a lot of things going for it. |
| Chick Mixer | Gross | Chicks in a blender. |
| Conker's Bad Fur Day | Gross / Stories | A parade of dark comedy and potty humor in a game developed by Rare Inc. |
| Running Cirno | Horror / Stories / Hall of Fame | A video made in MMD of a creepy running animation of Cirno. |
| D | ||
| Darwin Awards | Stories | A tongue-in-cheek honor for people who died in a "idiotic manner" (unsusal). |
| Demodex Folliculorum | Organism | Microscopic mite that can only survive on the skin of humans. |
| Depleted Uranium Ammunition | Deformity / Truth | Images of deformed children born due to radiation hit. |
| Der Flohwalzer | Gross / Nonsense | A execution scene in Danganronpa V3: Killing Harmony. |
| Doragory | Gross | A monster from the 7th episode of Ultraman Ace. |
| Doraemon the Horror | Horror | Horror parody of Doraemon by Hino Hideshi. |
| E | ||
| Eight Feet Tall | Occult | Japanese urban legend of a tall woman who abducts children. |
| Elsagate | Gross | Social issue on Youtube and Youtube Kids. |
| F | ||
| Fancy Island | Horror / Surprise / Hall of Fame | Browser game disguised as family friendly. |
| Foot Binding | Insanity / Truth | Chinese custom of binding young girls feet to a small size. It was seen as a status symbol. |
| G | ||
| H | ||
| Hamster Hell | Stories | Stop motion cartoon by Lee Hardcastle |
| Hakkōda Mountains Incident | Gross / Depression / Truth | Large-scale distress incident that occurred in Japan in January 1902. |
| Happy Tree Friends | Gross / Hall of Fame | Very violent web cartoon by Mondo Media. |
| Headless Mami | Gross / Depressing | A meme centering around Mami Tomoe's death in Puella Magi Madoka Magica. |
| Hydnellum Peckii | Organism | A mushroom that looks like it's bleeding all over. |
| I | ||
| Insane Set | Horror | Japanese McDonald's commercial of Sponge Bob toys. |
| Issei Sagawa | Gross / Truth | Japanese murder, cannibal and necrophile. |
| J | ||
| Junko Furuta | Gross / Depression / Truth | Japanese schoolgirl who was held captive for 44 days. The contents of this maybe very extreme. |
| K | ||
| Korean War | Gross / Truth | A war between North and South Korea. |
| L | ||
| Leucochloridium | Organism / Hall of Fame | Parasites that use snails as hosts |
| Linda³ | Gross | One of the few games given a 18+ rating on PC Engine |
| Lamprey | Organism | Jawless eel with a with gross mouth. |
| Louis XVII | Depression / Truth | A king of France who lived a tragic life. |
| Lobotomy | Gross / Truth | World's most dangerous surgery. |
| M | ||
| Magical Doctor | Surprise | A Vocaloid song about drug abuse. It features a promotional video that flashes and spins violently. |
| Matsuyama Kyowa Hospital | Gross / Horror | More specifically a harassment movement of shock sites disguised as review sites about the affiliated doctors. |
| Me!Me!Me! | Gross / Perverted | Erotic, gory music video for Japan Animator Expo. |
| Mermaid in a Manhole | Gross / Hall of Fame | 4th movie of the Guinea Pig series by Hideshi Hinoo]. |
| Mike the Headless Chicken | Organism | A chicken who lived for 18 months after his head was cut off. |
| Momoiro Usagi | Surprise | An original song by Healing-P for Kagamine Len. |
| Mortal Kombat | Gross | A brutal fighting game known for it's gory fatality animations. |
| Mopemope | Horror / Surprise | Controversial music video almost falling into Elsagate territory by being heartwarming at first glance. |
| N | ||
| Nanase Yui | R-18 | Name of a character from the kids anime Go! Princess Pretty Cure but also a name of a pornstar. |
| Narutaru | Depression | Known as Shadow Star in the US. |
| Natsumi Step! | Depression / Hall of Fame | Horror web anime made in flash. |
| Needlefish | Organism / Gross | A fish that jump out of the sea and kill people. |
| Negimaru! | R-18 / Depression | Hentai series of Negima! Magister Negi Magi |
| Nevada-tan | Truth | Name given to a 11-year-old female murderer by people on the internet. |
| Ningen | Occult | A humanoid creature from Japanese folklore. |
| Noroi-chan | Horror / Stories | Character from the TV program Shakiin! |
| Nugumu | Horror / Stories | A Virtual Youtuber. |
| O | ||
| P | ||
| panapp | Horror | An ice cream that, depending on how you eat it, can create an appearance of terror. |
| Pennywise | Horror | Clown character from the movie IT |
| Pingu 24th Episode | Horror | An episode seen so horrific that it has been banned in some countries. |
| Pipa Pipa | Organism | A frog that can trigger people with trypophobia. |
| Pokémon Shock | Truth | About the worst broadcast accident in anime history. |
| Popee the Performer | Gross / Stories / Hall of Fame | CG' kids anime known for it's over the top violence. |
| Purple Mirror | Horror | The urban legend says that if you remember it until you are twenty, you will die. |
| Q | ||
| R | ||
| Rorochan_1999 | Truth | 14-year-old Japanese live streamer that committed suicide. |
| R | ||
| Roadkill | Gross / Truth | Animals killed by car. |
| Rosalia Lombardo | Truth | Known as the most beautiful mummy in the world. |
| S | ||
| Sasebo Slashing | Truth | The event that Nevada-Tan partake in. |
| SCP | Horror | A site that collects fictional monsters. |
| Shōjo Tsubaki | Gross / Stories | More specifically the adaptations known as Midori in the west. |
| Shuji Tsugawa | Horror / Hall of Fame | A character from one Detective Conan's more depressive episode. |
| Sky Burial | Gross / Culture Shock | Funeral practice of being eaten by birds on mountaintops. |
| Sumo Sticker | Horror / Mystery | Mysterious stickers with two faces. |
| Squidward's Suicide | Horror / Stories | So called lost episode of SpongeBob SquarePants. |
| T | ||
| The Headless Girl Incident | Gross / Insane | A murder case that occurred in Aichi Prefecture in 1932. |
| The Girl Who Trod on the Loaf | Depression | One of Andersen's fairy tales. |
| This Man | Occult | A marketing stunt featuring a somewhat unnerving picture of a man's face. |
| Tiananmen Square Massacre | Gross / Truth | An incident that took place in Tiananmen Square, Beijing. |
| Toro on Holiday Photo | Horror / Occult | A rumored photo of ghost in the game Toro on Holiday. |
| Trypophobia | Gross | The fear of holes, mainly many holes close together on say a body. |
| Tsunaka Yuriko | Horror | Japanese urban legend of a name that must not be enter in video games. |
| Ttongsul | Gross / Food | Alcohol made from human feces |
| U | ||
| Username666 | Horror / Hall of Fame | Horror video by Japanese visual artist Piropito. |
| V | ||
| W | ||
| X | ||
| XXX | R-18 | A term often use to mean porn. |
| Y | ||
| Yoshie Kimura | Horror / Stories | Main antagonist of Death Forest. |
| You Are An Idiot | PC Damage | A flash virus that would open many windows. |
| Yume Nikki | Horror / Depression / Hall of Fame | Game where you walk around in a dark dream. |
| Z | ||
| Zdzislaw Beksinski | Horror | Within Japan it's rumored his art will kill you if seen 3 times. |