There is a figure that fascinates me about the Japanese market: Takashi Kotegawa, known as BNF in trading circles. It's not a name you hear in mainstream media, but his story is simply legendary.

Kotegawa was born in 1978 without inheriting a fortune. What set him apart was his obsession with understanding the market from scratch. While other traders took formal courses or relied on institutions, he was completely self-taught. He watched charts, analyzed patterns, studied company fundamentals. That was his school.

The interesting thing is that Takashi Kotegawa didn't become famous during normal times. His moment came during the chaos of 2005, when the Livedoor scandal shook the Japanese stock market. While most investors panicked and lost money, he saw opportunities. It is reported that he earned over 2 billion yen in just a few years. His ability to stay calm amid extreme volatility was supernatural.

But the trade that cemented his place in history was the J-Com mistake. A Mizuho Securities trader made an epic error: he tried to sell 1 share at 610,000 yen but accidentally entered 610,000 shares at 1 yen. Most would have panicked. Kotegawa instantly recognized what was happening, massively bought the undervalued shares, and when the error was corrected, he made huge profits. That was not luck— it was vision and perfect execution.

What I find most appealing about Takashi Kotegawa is his humility after success. With billions in the bank, he still uses public transportation, eats at inexpensive restaurants, and almost never appears in the media. He avoids showing his face publicly. It’s the opposite of what you see with other millionaire traders.

His legacy is simple but powerful: in a world dominated by hedge funds and mega-institutions, Kotegawa proved that an individual trader with discipline, patience, and correct timing can compete and win. You don’t need connections, you don’t need inherited money. You need the right mindset.