The Time-Traveling Tycoon

A poor young man travels back twenty years to an internet cafe, discovering immense wealth secrets for the next two decades on a computer. He gathers talented individuals, uses an internet cafe loophole, quickly accumulating a fortune. Their actions attract a rival company, which tracks them down and takes him to their company to question his 'mysterious ability.' Faced with coercion, he uses his foreknowledge to resolve the crisis, becoming a billionaire and embarking on a legendary life.