is a Japanese manga series written and illustrated by Yuu Yoshinaga. It was serialized in Shogakukan's shojo manga magazine Betsucomi from August 2021 to May 2025.
Synopsis Aoi Tsujimura has an inferiority complex especially when compared with her shōjo mangaka mother and her older brother Itsuki, who is an athlete, and a low self-esteem, as a result she often feels lonely. Due to this, Itsuki decides to interfere in Aoi's life and brings in his classmate Sena Mizusawa to freshen Aoi's life.
Characters
Media Manga Written and illustrated by Yuu Yoshinaga, Diary of a Female Lead: Shujinkou Nikki was serialized in Shogakukan's shōjo manga magazine Betsucomi from August 12, 2021, to May 13, 2025. Its chapters were compiled into twelve volumes released from December 24, 2021, to January 26, 2026. The series is licensed in English by Seven Seas Entertainment.
Other A voice comic adaptation was published in the July 2023 issue of Betsucomi on June 13, 2023. The voice comic is also available on the Flower Comics YouTube channel. The voice comic consisted of performances by Saori Hayami and Yoshimasa Hosoya.
Reception The series had over 3.1 million copies in circulation by February 2025.
The series was nominated for the 69th Shogakukan Manga Awards in 2023.
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