Synopsis: Hiding the Archduke's Humiliating History

남주가 흑역사를 책임지라고 합니다 / 주가 흑역사를 책임지라고 합니다 / Namjuga Heugyeoksareul Chaegimjirago Hamnida / The Male Lead Is in Charge of the Successor / The Dark History of the Male Lead / พระเอกบอกให้ฉันรับผิดชอบยุคมืดของเขา / 黒歴史の責任を取れですって!? / 男主要我对他的黑历史负责 After being neglected in her past life, Izelle is ecstatic to be reborn as a rich character until her family suddenly goes bankrupt! While thinking about what to do, she's given the perfect chance to solve her financial crisis when she saves young Archduke Karl Byron from being bullied. Unfortunately, Karl doesn't remember her at all when they reunite as adults, and she has no choice but to coerce him into helping her. Can Izelle get what she wants, or will Karl be more trouble than he's worth?