Am I the Villainess?

Three charges. Ninety days. Zero allies. Yoon Hajin died a special forces captain, shielding civilians from an explosion that should never have happened. She wakes up in the body of Seraphina Croft—a noblewoman already condemned to death, convicted of poisoning, cursing, and treason, with every noble in the palace praying for her execution. She doesn't know this world. She doesn't know this body. She doesn't know why seven princes look at her like she's something to be erased. But she knows h