is a Japanese light novel series written by Asaki Asagiri and illustrated by selen. It was originally serialized as a web novel on Shà Âsetsuka ni Narà  between January and April 2023. It was later acquired by Square Enix who began releasing it under their SQEX Novel imprint in March 2024. A manga adaptation also illustrated by selen began serialization on Square Enix's Manga Up! manga service in October 2024.
Leticia Orlesian is the daughter of a duke who is admired for her doll-like appearance, deep blue eyes, and silver hair. Nicknamed "the Belle Poupée", she is engaged to the second prince Gilbert, who is said to be cursed. When the two meet, Leticia is excited but Gilbert is not thrilled, treating her coldly initially. However, unbeknownst to most people, Leticia is actually a skilled magician with ice powers and can also change her appearance to that of a man. When Gilbert gets attacked by thugs, Leticia defends him and vows to protect him in the future.
Written by Asaki Asagiri, The Princess Groom was originally serialized as a web novel on Shà Âsetsuka ni Narà  from January 1, to April 3, 2023. It was later acquired by Square Enix who are releasing the series with illustrations by selen under their SQEX Novel light novel imprint. A single volume has been released as of March 7, 2024.
A manga adaptation also illustrated by selen began serialization on Square Enix's Manga Up! manga service on October 28, 2024. The manga's chapters have been compiled into two tankà Âbon volumes as of October 2025.
The manga's chapters are published in English on Square Enix's Manga Up! Global app. In February 2026, Square Enix Manga & Books announced that they had licensed the manga for English publication, with the first volume set to release in August 2026.
The series won the gold prize at Square Enix's 1st SQEX Novel Award in 2023.
The manga adaptation was ranked 21st in Da Vincis 2025 Book of the Year ranking. The manga topped the Nationwide Bookstore Employees' Recommended Comics list of 2026. The manga, alongside Perfectly Fine on My Own, So My Fiancé Can Twist in the Wind, won the Women's Comic Prize at the 2026 Digital Comic Awards.