The Tycoon They Regret Losing

Ethan Walker is an office worker whose girlfriend Iris ends things with him, insisting he is simply too poor for her life. Stung by the rejection, he awakens a mysterious system called Regret Level Ty, which promises to turn his fortunes around. The story sets up a revenge-driven rise from the bottom, with Ethan determined to make the people who looked down on him feel the cost of their choices.