DREAM STAR OF OBELIA - Who made me a princess fanfic

In the world of Kim Iseul, a lonely and depressed child, life has been nothing but a series of abuse and neglect. Her parents and friends have subjected her to constant mistreatment, leaving her feeling isolated and broken. However, amidst the darkness, she finds solace in the pages of Manhwa, a Korean comic book genre.

One fateful day, as Kim Iseul walks down the street, engrossed in the final chapter of "Who Made Me a Princess," her favorite Manhwa series, tragedy strikes. Oblivious to her surroundings, she is struck by a speeding truck, and her fragile existence comes to an abrupt end.

But as Kim Iseul opens her eyes once again, she finds herself in a bewildering situation. Instead of the familiar hospital room or the afterlife, she is greeted by the unexpected sight of two young men standing before her. To her astonishment, they bear an uncanny resemblance to Claude de Alger Obelia and Felix Robane, the main characters of "Who Made Me a Princess."

"Her name would be Ambrosine De Alger Obelia" said Claude

Confused and disoriented, Kim Iseul soon realizes that she has been reincarnated into the world of her beloved Manhwa. She finds herself in the midst of a fantastical kingdom, surrounded by opulent palaces, lavish gowns, and courtly intrigue. As she navigates this new reality, she discovers that she has taken on the role of older sister of Athanasia de Alger Obelia, the ill-fated princess whose tragic life she once read about.
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But both Claude and Felix look much Younger she realized that the Manhwa hasn't even started yet!!!!!