Japanese manga artist Demunyan spent a full eighteen years battling it out in the trading slaughterhouse, finally reaching a point where the profitability of his investment career officially turned positive.

He entered the market at the start of 2008 and stepped into one trap after another. Holding all his cash, he exchanged it for US dollars—only to be taught a hard lesson by hefty fees. After that, he threw himself headfirst into high-volatility “zhuang” stocks, leveraged FX, and oil CFDs, and then even crashed into the crypto market, chasing worthless “air coins.” He portrayed human greed and superstition, doubling down on hope, and refusing to cut losses with razor-sharp intensity.

At his peak, his cumulative losses topped 14 million yen. Countless times he was liquidated and faced margin calls that demanded repayment again and again—his account bottomless, a relentless struggle through a swamp of losses. He hit rock bottom. Taking everything—his gambler-like fighting spirit, collapse, and unwillingness to admit defeat—he poured it all into his manga, creating the breakout masterpiece “FX Warrior Kuru-mi.” While being repeatedly harvested by the market, he turned his blood-and-tears lessons into creative fuel, building his own career through manga.

Over and over again, he repeated the same cycle—making the same mistakes, committing one error after another. Time and again he thought a comeback was finally within reach, only to hand back his fragile profits to the market with interest the moment it seemed to turn around. In the long darkness, he didn’t completely leave the arena. Slowly he matured and began laying out plans for dividend stocks and index funds, seeking passive income that belonged to him.

Just as the yen surged back strongly, his leveraged trades—betting days on end that the yen would rise and the US dollar would fall—finally found their turning point. The decade-plus accumulated trading losses were finally filled in, one transaction at a time, and the curve arduously crawled across the zero line.

Looking back on this eighteen-year ordeal of a trading journey, he reflects: Fortunately, when he was young he experienced so many failures—many of which were meaningless in themselves, even failures that were nothing but repeated mistakes. Yet all the suffering and trials ultimately forged the person he is today
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