My Broke Bodyguard is a Billionaire?

In her past life, Yoojung was murdered by her younger sister, who coveted the wealth Yoojung had married into. Reborn, she's set up with Kang Jaehyuk, the family "beggar", while her sister steals the billionaire brother-in-law. But the "beggar's" true identity? Heir to the LY Group. This time, she chooses the fake pauper over the gilded cage, unaware she's found a love worth dying for. But when the truth surfaces, what challenges will they face together?