Rei Kokubun's Vision of Crypto's Future: The "Selling Phase" After Bitcoin's Surge and Ethereum's Selective Strategy

Self-proclaimed Rei Kokubun, who claims to have come from 2058, is known among internet users as “Japan’s strongest future person” and attracts attention in crypto communities. She became a trending topic through her predictions about the number of gold medals at the Tokyo Olympics, the crash of the Nikkei average in March 2020, and the timing of Shinzo Abe’s resignation. Now, she is once again sending messages aimed at the cryptocurrency market.

Rei Kokubun’s Background and Investment Strategy Differences

Rei Kokubun was born in 2034 and states that she was enrolled in the engineering faculty at a university in Tokyo. She claims to have arrived in the current era using a spacetime transfer device in December 2019. Her series of statements on X (formerly Twitter) has garnered significant interest from crypto investors and forward-looking individuals.

A key feature of her investment judgment is her emphasis on Ethereum rather than Bitcoin. She states that between late 2019 and early 2020, she purchased approximately 1,400 Ethereum and stored them in hardware wallets. Her reasoning is that the Ethereum ecosystem offers more application opportunities and higher growth potential compared to Bitcoin.

The “Selling Phase” During Bitcoin’s Price Surge

An interesting aspect of Rei Kokubun’s future outlook is her view on Bitcoin’s position. She predicts that Bitcoin could reach a massive level of about 780 million yen (roughly $4.94 million), but also states that at that time, “there will only be the option to sell, with no room for additional buying.”

This statement leads to different interpretations among current investors. Supporters believe it indicates that now is still a valuable time to acquire Bitcoin and that a long-term holding strategy is worthwhile. Conversely, the warning about a coming selling phase suggests that investors should be aware of the importance of timing their trades, rather than expecting unlimited upward movement.

Are Her Past Predictions Truly “Extraordinary”?

The reason her supporters trust her is that several of her past predictions have aligned with reality, such as the number of gold medals at the Tokyo Olympics, movements in the Nikkei stock average, and political turning points.

However, researchers and skeptics argue that these “success stories” can often be explained by more mundane factors. They point out that inferences based on economic trends or political scandals, or post-hoc interpretations, may inflate the perceived accuracy of her predictions. Additionally, her use of vague language and ambiguous expressions to attract attention, along with adopting a style open to multiple interpretations, are also noted.

Balancing Rationality and Emotion in the Crypto Market

Rei Kokubun’s mentions of Bitcoin and Ethereum have sparked active discussions among crypto investors. As of 2026, Bitcoin (BTC) trades around $71,840, and Ethereum (ETH) is near $2,100. Investment decisions at these price levels heavily depend on individual risk tolerance.

Financial experts advise that regardless of the accuracy of future predictions, investors should first calmly assess their own financial situation and risk capacity. Her “selling phase” theory could also potentially trigger excessive market optimism or panic, so caution is advised.

The Importance of Separating Mystique from Investment Decisions

Rei Kokubun exists as a media phenomenon of the digital age and also plays a role as an indicator in investment decision-making. Her identity and the truth of her predictions remain uncertain. However, what is noteworthy is the psychological impact such topics have on the crypto market.

Among internet users, there is a coexistence of beliefs that a time traveler might exist and a rational view that these stories are just clever storytelling. What matters most is not how to interpret Rei Kokubun’s statements, but how individuals autonomously build their own investment strategies.

Ultimately, observing market development and real-world progress, while making cautious judgments and managing losses step by step, will be the best approach for investors.