She sees the threads of life. But no one sees who she truly is. In the heart of Joseon, a genius physician, Gye-hwa, hides her brilliance behind tattered robes and a man's name. She's desperate to flee the country and her ill-starred past. But one reckless mistake binds her to a man whose life thread remains unreadable. Her chances of escape crumble when she discovers he's none other than the king himself, roaming the night in secret. Tangled in palace intrigue, Gye-hwa must now serve as a royal physician to cure the king, Eon, born with poison in his heart. His piercing gaze threatens to unravel her secrets—and he might just be the first man ever to quicken her pulse for reasons beyond any forbidden medicine. Copyright ⓒ Ina Seo All rights reserved. Published by Tappytoon under license from partners.