is a Japanese light novel series written by and illustrated by Mitsuya Fuji. It began serialization online in November 2019 on the user-generated novel publishing website Shà Âsetsuka ni Narà Â. It was later acquired by Kadokawa Shoten, which has published eight volumes since March 2020 under its Kadokawa Beans Bunko imprint. A manga adaptation with art by Anko Yuzu has been serialized in Kadokawa Shoten's seinen manga magazine Comp Ace since July 2020. It has been collected in ten tankà Âbon volumes. An anime television series adaptation produced by J.C.Staff first season aired from October to December 2024.
Jill Cervel, a noblewoman and warrior from the borderlines between the Kingdom of Kratos and Empire of Rave, is engaged to Crown Prince Gerald and she sacrifices her youth in honing sword arts and magic. She participated in countless battles to input a standstill in any forthcoming civil wars. However, after discovering Gerald's incestuous relationship with his sister, Jill is framed and publicly chased to escape from execution. She is suddenly lunged upon a clockwork lance that sends her back five years to the day of Gerald's propose of marriage to her. After regressing, to avoid suffering the same fate, she impulsively proposes to the dashing Emperor Hadis Teos Rave, who was supposed to become her future enemy. Yet, Jill will soon find she may have made the better choice.
Written by Sarasa Nagase, The Do-Over Damsel Conquers the Dragon Emperor originally began serialization on the Shà Âsetsuka ni Narà  website on November 2, 2019. It was later acquired by Kadokawa Shoten, who began publishing the series with illustrations by Mitsuya Fuji on March 1, 2020, under their Kadokawa Beans Bunko imprint. As of August 2025, eight volumes and two short story volumes have been released.
In December 2022, Cross Infinite World announced that it had licensed the novels for an English release.
A manga adaptation illustrated by Anko Yuzu began serialization in Kadokawa Shoten's Comp Ace magazine on July 27, 2020. As of March 2026, ten tankà Âbon volumes have been released. In February 2023, Yen Press licensed the manga in English.
An anime adaptation was announced on April 28, 2023, later revealed to be a television series. It is produced by J.C.Staff and directed by Kentarà  Suzuki, with Atsuo Ishino overseeing series scripts, and Sana Komatsu designing the characters. The first season of the series aired from October 9 to December 25, 2024, on AT-X and other networks. The opening theme song is , performed by sajou no hana, while the ending theme song is "Gradation", performed by HaNaTan. Crunchyroll streamed the series.