Diary of a Female Lead: Shujinkou Nikki

Diary of a Female Lead: Shujinkou Nikki (主人恋日記) is a Japanese manga series written and illustrated by Yuu Yoshinaga. It began serialization in Shogakukan's shojo manga magazine Betsucomi in August 2021.

Manga
Written and illustrated by Yuu Yoshinaga, Diary of a Female Lead: Shujinkou Nikki began serialization in Shogakukan's shōjo manga magazine Betsucomi on August 12, 2021. Its chapters have been collected into seven tankōbon volumes as of January 2024. The series is licensed in English by Seven Seas Entertainment.

Vomic
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 1.2 million copies in circulation by January 2024.

The series was nominated for the 69th Shogakukan Manga Awards in 2023.