Game Portal : Making a Multi-Billion Dollar Company! GP

The young man was living a hard life ever since his father was killed by a powerful, rich individual. He was left in debt, having to pay for a house they no longer owned, a hefty medical bill, and expensive education fees. But his fortune changed one day when he stumbled upon The Game Portal, a portal which allowed him to bring products from the game into the real world and sell them for a profit. With his newfound strength, he set out to become the greatest businessman in history, using his wits and determination to make a fortune. Along the way, he will face numerous obstacles in becoming a legend in the business world.

Cover art: it's the character Pearl Lex
(Remake)