Do-yun, the ruthless CEO of a luxury conglomerate, has built her life on control. After surviving a fire that killed her parents, she trusts only logic and money. She’s about to finalize a merger that will make her the youngest female tycoon in Seoul — but her jealous cousin sabotages her, leaving her bankrupt and betrayed.

It looks like you're referencing a specific file or release title for a show called My Demon (2023), likely a Korean drama that has been dubbed in Hindi (dual audio). However, that string appears to be a filename or torrent label, not a story premise.

Enter — a demon trapped in human form for 200 years, bound to collect 10,000 souls to break his curse. He appears at her summoning, amused and annoyed. He agrees to help her reclaim her fortune in exchange for her soul at the end of one year.

If you'd like me to inspired by the title My Demon (romantic fantasy K-drama style), here’s a complete narrative concept: Title: My Demon Logline: A cynical heiress who trusts no one makes a desperate pact with a centuries-old demon who feeds on human souls — but when they accidentally swap their powers, they must live side by side to survive, discovering that the coldest hearts hide the deepest fires. Story Outline Act One: The Contract

On the verge of death, she recalls an old family legend: summon a demon by drawing a forgotten sigil in blood. Desperate, she does it.