When Nanao was a child, she was kidnapped by an ayakashi who carved a demonic seal on her body. Her planned marriage to the Waka-sama of the Hakurenji family was stolen from her by her cousin Akemi, and she was forced to wear a monkey mask to hide her demon mark, leading a miserable life. Then, she meets Yako, the young head of the Benitsubaki family. Nanao loses her mask due to a certain incident, and Yako sees her true face, but Yako takes an interest in her beauty and spiritual power.

Official English Translations:
K Manga, MangaPlaza

Notes:

• The manga was nominated in the Shojo category at the 49th Kodansha manga awards
• The manga ranked 3rd in the Kodansha Shounen Manga Sales Ranking (digital) in the first half of 2025, 5th in the second half of 2024, 7th in the first half of 2024, and 10th in the second half of 2023. The manga ranked 10th in the Kodansha Shounen Manga Sales Ranking (physical) in the first half of 2025.

https://www.cmoa.jp/title/269729/