KFK 2075, known as YJ (@YJ943636) on Twitter, registered on January 3, 2018, claiming to be a time traveler from 2075. Posting in Japanese, YJ answered questions about the future covering technology, warfare, geographical changes, and social systems.
In KFK's (the time traveler from 2060) Douban Q&A, KFK mentioned that there were 'legal time travelers' from both 2075 and 2062, stating that 'most of their answers are truthful, though some are well-intentioned white lies.' This brought YJ's predictions significant attention in the Chinese-speaking internet.
YJ posted intermittently from 2018 to 2020, claiming to have foreseen satellite crashes, World War III, Japan's capital relocation, an AI-dominated society, and more. In December 2018, YJ suddenly stopped posting and left behind a mysterious encrypted message, briefly returning in early 2020 before disappearing again. This site compiles the major predictions with verification assessments.
Core Message
"2020 will be a very important year economically and militarily. The era of handling cash will end within a few years."
Jan 2018 — YJ registers on Twitter, first tweet claims to be from 2075Apr 2018 — Predicted 'satellite crash' comes true as Tiangong-1 reenters atmosphereDec 2018 — Suddenly stops posting, leaves behind encrypted codeJan 2020 — Briefly returns, says '2020 will be a very important year'May 2020 — Final update before disappearing entirely
Predictions compiled from YJ's Twitter account @YJ943636 and Chinese community reposts (Twitter @YJ943636 )
Chinese translations referenced from Pixnet blog and Douban discussion threads (Pixnet compilation )
KFK's mention of the 2075 traveler from original Douban thread (Douban discussion )
Verification based on public news reports and statistical data
Editorial opinions do not represent academic consensus
Site icon: hourglass symbol — representing time travel and the future
KFK 2075 Prophecies All Prophecies 27 Q&A entries in total
YJ's first prediction: satellite crash
KFK2075: "A man-made satellite will fall in 2018."
The importance of 2020
KFK2075: "2020 will be a very important year economically and militarily."
The coming cashless society
KFK2075: "The era of handling cash will end within a few years."
AI-powered electric vehicles become mainstream
KFK2075: "Electric vehicles equipped with artificial intelligence will be the mainstream."
China's artificial weather control system
KFK2075: "In 2021, China will complete and implement a practical artificial weather control system."
Japan's moon landing
KFK2075: "By 2021, Japan will successfully land on the Moon for the first time."
Japan's capital relocation
KFK2075: Q: "Does Japan still exist then?" YJ: "It still exists, but the capital is no longer Tokyo — it has become Okayama."
World War III
KFK2075: "World War III will break out in 2031."
Simulated conversations with the deceased
KFK2075: "In 2031, technology will advance to allow realistic simulated conversations with the deceased."
Japan abolishes Three Non-Nuclear Principles
KFK2075: "Japan will abolish the Three Non-Nuclear Principles in 2025."
Korean Peninsula upheaval
KFK2075: "Kim Jong-un will be assassinated, involving North Korea, the US, Japan, South Korea, and China. The Korean Peninsula will be unified."
Desert solar power plant with superconducting transmission
KFK2075: "In 2029, a large solar power plant will be built in the desert, using superconducting transmission technology to supply electricity worldwide."
AI should not have been created
KFK2075: "Regarding AI development — it should not have been created. Most jobs will be eliminated; most people will be unable to work even if they want to."
Surveillance society and disappearing privacy
KFK2075: "The future is a surveillance-type social structure; the concept of personal privacy will be greatly diminished."
Taiwan's main problem
KFK2075: "Taiwan's primary problem in the future will be aging population."
Oceanic ecosystem collapse
KFK2075: "Marine life is nearly extinct or unavailable for consumption. By 2075, it is very difficult for humans to eat seafood."
Dream manipulation devices
KFK2075: "Dream manipulation devices will be invented, allowing people to freely choose the dreams they want to experience."
The theoretical basis of time machines
KFK2075: "The theoretical basis of time machines comes from Nikola Tesla's research; it looks like a large pipe. Time travel is restricted to government-authorized personnel only."
Future dietary system
KFK2075: "In 2075, people typically eat four meals a day, one of which is a nutritional supplement."
Molecular-level replication devices
KFK2075: "Molecular-level replication devices will be perfected, allowing precise replication of objects at the molecular level."
New species in the Mariana Trench
KFK2075: "New species will be discovered in the Mariana Trench."
Widespread VR gaming
KFK2075: "Virtual space experience games will become fully widespread; people will be able to completely immerse themselves in virtual worlds."
Russia's nuclear space engine
KFK2075: "Russia will complete the world's first nuclear space engine."
The relationship between aliens and humans
KFK2075: "Humans have had friendly interactions with aliens since ancient times. UFOs are not just transportation for extraterrestrial life."
The survival of the acting profession
KFK2075: "In a future where most professions are eliminated by AI, acting is one of the few surviving careers."
Driving at age 15
KFK2075: "Due to the prevalence of AI-assisted driving, one can drive a car equipped with a full AI system at age 15."
YJ's mysterious departure
KFK2075: "On December 13, 2018, YJ posted a string of meaningless code and stopped updating. The final message was described as 'the key to encountering the future.'"
Prophecy Verification Evaluating predictions against reality for expired time points
YJ's first prediction: satellite crash
KFK2075: "A man-made satellite will fall in 2018."
On April 2, 2018, China's space station Tiangong-1 reentered the atmosphere after orbital decay, with debris falling into the South Pacific. This was YJ's earliest and most widely cited fulfilled prediction.
Russia's nuclear space engine
KFK2075: "Russia will complete the world's first nuclear space engine."
Russia has been developing the 'nuclear-powered space tug' project (TEM) since the 2010s. In 2018 it was in the R&D phase but not completed. The project has been repeatedly delayed and remains under development as of 2025.
The importance of 2020
KFK2075: "2020 will be a very important year economically and militarily."
The COVID-19 pandemic swept the globe in 2020, causing an unprecedented economic shock with global GDP declining 3.1%. Militarily, events such as the China-India border standoff and escalating US-Iran tensions made it an extraordinary year indeed.
China's artificial weather control system
KFK2075: "In 2021, China will complete and implement a practical artificial weather control system."
In December 2020, China's State Council issued a plan to build a comprehensive weather modification system by 2025. By 2021, cloud seeding and hail suppression operations were conducted in many regions, but fell far short of actual 'weather control.'
Japan's moon landing
KFK2075: "By 2021, Japan will successfully land on the Moon for the first time."
Japan did not achieve its first lunar soft landing until January 2024 with the SLIM probe, three years later than predicted. No moon landing mission was conducted in 2021.
The coming cashless society
KFK2075: "The era of handling cash will end within a few years."
By 2025, China's mobile payments covered over 90% of daily transactions, and Nordic countries like Sweden saw cash usage drop below 1%. However, cash has not fully disappeared globally, with most countries still maintaining cash circulation.
AI-powered electric vehicles become mainstream
KFK2075: "Electric vehicles equipped with artificial intelligence will be the mainstream."
Global EV sales exceeded 17 million in 2025 with rising market share. AI-assisted driving systems like Tesla FSD and Huawei's smart driving are widely deployed, but AI EVs have not yet fully replaced traditional fuel vehicles as the absolute mainstream.
Japan's capital relocation
KFK2075: Q: "Does Japan still exist then?" YJ: "It still exists, but the capital is no longer Tokyo — it has become Okayama."
Japan abolishes Three Non-Nuclear Principles
KFK2075: "Japan will abolish the Three Non-Nuclear Principles in 2025."
As of the end of 2025, Japan has not formally abolished the Three Non-Nuclear Principles (no possession, production, or introduction of nuclear weapons). While domestic discussions about nuclear sharing increased, the principles remained official policy.
New species in the Mariana Trench
KFK2075: "New species will be discovered in the Mariana Trench."
Between 2019 and 2025, multiple deep-sea expeditions discovered new species in the Mariana Trench, including a new amphipod species in 2020 and new deep-sea fish species in 2024. This prediction was vague but directionally correct.
Desert solar power plant with superconducting transmission
KFK2075: "In 2029, a large solar power plant will be built in the desert, using superconducting transmission technology to supply electricity worldwide."
World War III
KFK2075: "World War III will break out in 2031."
Simulated conversations with the deceased
KFK2075: "In 2031, technology will advance to allow realistic simulated conversations with the deceased."
Korean Peninsula upheaval
KFK2075: "Kim Jong-un will be assassinated, involving North Korea, the US, Japan, South Korea, and China. The Korean Peninsula will be unified."
AI should not have been created
KFK2075: "Regarding AI development — it should not have been created. Most jobs will be eliminated; most people will be unable to work even if they want to."
Surveillance society and disappearing privacy
KFK2075: "The future is a surveillance-type social structure; the concept of personal privacy will be greatly diminished."
Taiwan's main problem
KFK2075: "Taiwan's primary problem in the future will be aging population."
In 2025, Taiwan's population aged 65 and above exceeded 20%, officially entering a 'super-aged society.' Low birth rates and aging have become Taiwan's most pressing social issues, with growing labor shortages and social security pressures.
Oceanic ecosystem collapse
KFK2075: "Marine life is nearly extinct or unavailable for consumption. By 2075, it is very difficult for humans to eat seafood."
Dream manipulation devices
KFK2075: "Dream manipulation devices will be invented, allowing people to freely choose the dreams they want to experience."
The theoretical basis of time machines
KFK2075: "The theoretical basis of time machines comes from Nikola Tesla's research; it looks like a large pipe. Time travel is restricted to government-authorized personnel only."
Future dietary system
KFK2075: "In 2075, people typically eat four meals a day, one of which is a nutritional supplement."
Molecular-level replication devices
KFK2075: "Molecular-level replication devices will be perfected, allowing precise replication of objects at the molecular level."
Widespread VR gaming
KFK2075: "Virtual space experience games will become fully widespread; people will be able to completely immerse themselves in virtual worlds."
The relationship between aliens and humans
KFK2075: "Humans have had friendly interactions with aliens since ancient times. UFOs are not just transportation for extraterrestrial life."
The survival of the acting profession
KFK2075: "In a future where most professions are eliminated by AI, acting is one of the few surviving careers."
Driving at age 15
KFK2075: "Due to the prevalence of AI-assisted driving, one can drive a car equipped with a full AI system at age 15."