The Oblivious Saint Can't Contain Her Power

Plot

The Duke has two daughters: Flora, who is beautiful and a candidate to become a saint, and Carolina, who is plain and lacking talent. One day, in order to improve relations with a neighboring country, Carolina is to be married to the second prince, despite rumors that he can be brutal and cruel. After getting married, they realized that Carolina was actually the more talented sister.

Characters

Carolina Sánchez (カロリーナ・サンチェス, Karorīna Sanchesu) / Carolina Ruby Martínez (カロリーナ・ルビー・マルティネス, Karorīna Rubī Marutinesu)

Voiced by: Rie Takahashi

The main female protagonist. The second born daughter of the Duke of Celestia. A kindhearted and beautiful young lady whose older sister has been belittling and abusing her, causing her to be sad and withdrawn. All of that began changing following her arranged marriage to Prince Edward, who she soon grew to love. Initially, she believed she possessed no magical abilities, but she was later revealed to have divine power that surpasses the current pope.

Edward Ruby Martínez (エドワード・ルビー・マルティネス, Edowādo Rubī Marutinesu)

Voiced by: Makoto Furukawa

The main male protagonist. The second Prince of the current Emperor of Malcosias, he is a skilled knight who uses fire magic. Due to rumors, many believe him to be a cold and ruthless man while in fact he is truly a kind and noble person. He quickly falls in love with Carolina.

Flora Sánchez (フローラ・サンチェス, Furōra Sanchesu)

Voiced by: Haruka Shiraishi

Carolina's older sister. An arrogant woman who treats her sister with contempt because their mother died giving birth to her. Considered to be a future saint, due to her skilled use of holy magic, she was livid to discover that her great power was actually because her sister's own divine power had been enhancing her own.

Theodore García (テオドール・ガルシア, Teodōru Garushia)

Voiced by: Shun'ichi Toki

Prince Edward's right hand.

Melissa Kissinger (マリッサ・キッシンジャー, Marissa Kisshinjā)

Media

Light novel

Written by Almond, The Oblivious Saint Can't Contain Her Power: Forget My Sister! Turns Out I Was the Real Saint All Along! was initially serialized on the user-generated novel publishing website Shōsetsuka ni Narō from 2020 to 2023. It was later acquired and published by Earth Star Entertainment under their Earth Star Luna imprint featuring illustrations by Yoshiro Ambe, in four volumes from June 16, 2021, to June 1, 2023.

During their panel at Anime NYC 2023, J-Novel Club announced that they have licensed the series for English publication.

Manga

A manga adaptation illustrated by Yona Etō began serialization on Earth Star Entertainment's Comic Earth Star manga website on April 28, 2022, with its chapters collected into nine tankōbon volumes as of September 2026, which will end with the release of its tenth and final volume. The manga adaptation is also licensed in English by J-Novel Club.

Anime

An anime television series adaptation was announced during the "Earth Star Novel 10th Anniversary Summer Festival" event on July 19, 2025. It is produced by Magic Bus and Picante Circus, and directed by Mitsutaka Noshitani, with series composition handled by Touko Machida, characters designed by Taihei Nagai, and music composed by Supa Love. The series aired from June 30 to September 15, 2026, on AT-X and other networks. The opening theme song is "Windmaker", performed by Kaya, while the ending theme song is "Unknown Me" (アンノウンミー, Annōn Mī), performed by Utahime Dream All Stars. Crunchyroll streamed the series.

Reception

The series won the encouragement award at the 2nd Earth Star Novel Award in 2020.