is a Japanese light novel series written by Rino Mayumi and illustrated by Hachi. It began serialization as a web novel published on Shōsetsuka ni Narō in January 2020. It was later acquired by Futabasha who began releasing it under their M Novels f imprint in September 2020. A manga adaptation illustrated by Asana Haine began serialization on Futabasha's Gaugau Monster manga service in December 2020.
Plot Seren has been teased all her life due to her "gloomy" appearance, especially in comparison to her younger sister. She overhears her fiancé talk about how he should have been engaged with her younger sister, hearing this she decides to annul the engagement, and train to become a high level magician with the help of a man named Viol and his black cat familiar.
Media Light novel Written by Rino Mayumi, The Drab Princess, the Black Cat, and the Satisfying Break-Up began serialization on Shōsetsuka ni Narō on January 27, 2020. It was later acquired by Futabasha who began publishing the series under its M Novels f light novel imprint on September 15, 2020. Ten volumes (including eight released digital-only) have been released as of June 10, 2026.
In March 2022, Cross Infinite World announced that they had licensed the series for English digital-only publication.
Manga A manga adaptation illustrated by Asana Haine began serialization on Futabasha's Gaugau Monster website on December 9, 2020. Haine would illustrate the manga until the fifth volume and was replaced by Netsurō Ohitashi. The manga's chapters have been collected into eleven (including three released digital-only) volumes as of May 2026.
The manga adaptation is published in English on NTT Solmare's MangaPlaza website under the title Gloomy Princess and the Black Cat's Peaceful Engagement Annulment.
Reception The series, alongside The Pregnant Contract Bride: I Was Bought by an Infatuated CEO and Fell Pregnant with His Love Child!, won the Light Novel Prize at NTT Solmare's Digital Comic Awards in 2022.
References
External links at Shōsetsuka ni Narō