is a Japanese manga series written and illustrated by Moridam. It was serialized on Hobunsha's digital platform "" from July 2021 to November 2023, with its chapters collected in three volumes. It has been licensed for English release in North America by Seven Seas Entertainment.
Plot.
Princess and warrior , childhood friends bound by promise, reunite after Lenaria defeats the Demon King. Instead of a traditional reward, Lenaria requests Sephiria's undergarments, revealing she suffers from a curse that transforms her into an erotic magazine unless she performs lewd acts. The two embark on a journey to lift the curse, but their progress is interrupted by attacks from the Demon King's sister, forcing them to employ increasingly intimate solutions to survive each encounter.
A new threat emerges when , another former associate of the Demon King, seeks to reshape the world according to her ideals. During this conflict, a mysterious Black Knight attacks Lenaria's group. The final confrontation resolves both Lenaria's curse and the larger threat posed by Clematis.
Publication.
Written and illustrated by Moridam, "12 Dirty Deeds to Unite the Princess and Her Heroine" was serialized on Hobunsha's digital platform "" from July 5, 2021, to November 13, 2023. Hobunsha collected its chapters in three volumes, released from March 1, 2022, to December 1, 2023.
In North America, the manga was licensed for English release by Seven Seas Entertainment and published under its Ghost Ship mature manga imprint.
Reception.
Reviewing the series for "Anime News Network", Christopher Farris described it as an absurdist adult comedy that embraces its ridiculous premise, featuring exaggerated sexual humor and fantasy elements. While praising its energetic art and screwball approach to lesbian-themed content, he noted the plot's incoherence and overly busy visual presentation. MrAJCosplay acknowledged the manga's initial comedic potential in its serious treatment of absurd situations, but criticized its repetitive jokes and diminishing returns as the story progressed. Both reviewers found fault with the artwork's excessive use of screentones and confusing layouts, though Farris maintained the series had enough humor to appeal to its target audience despite its flaws.