Tensei Shitara 15-sai no Ouhi deshita: Moto Shachiku no Watashi ga, Toshishita no Kokuouheika ni Semarareteimasu?!

Saeki Emi, 28, is reincarnated into the body of a 15-year-old queen after dying from overwork. She is married to a 17-year-old king. Expecting a comfortable new life, she quickly realizes the challenges of her situation. The king warns that reincarnated individuals are often targeted, and her identity has already been revealed. The original personality of her host body, Emilia, appears as a ghost. Emi finds her second life unexpectedly complicated and dramatic. She had hoped for peace after escaping corporate life but instead faces a royal setting filled with intrigue. The story is described as a romantic comedy set in the palace.