12 Dirty Deeds to Unite the Princess and Her Heroine

• Ja Kanji — 姫と女勇者が結ばれるための12の聖行為 • Ja Romaji — Hime to Onna Yūsha ga Musubareru Tame no 12 no Seikōi • Genre — * Action • Fantasy comedy • Yuri

• Type — manga • Author — Moridam • Publisher — Houbunsha • Magazine — Comic Fuz (magazine) • Imprint — Fuz Comics • First — July 5, 2021 • Last — November 13, 2023 • Volumes — 3

• Portal — yes is a Japanese manga series written and illustrated by Moridam. It was serialized on Hobunsha's digital platform Comic Fuz (magazine) from July 2021 to November 2023, with its chapters collected in three tankōbon volumes. It has been licensed for English release in North America by Seven Seas Entertainment.

Princess Sephiria and warrior Lenaria, 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 Kuremachisu, 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.

Written and illustrated by Moridam, 12 Dirty Deeds to Unite the Princess and Her Heroine was serialized on Hobunsha's digital platform Comic Fuz (magazine) from July 5, 2021, to November 13, 2023. Hobunsha collected its chapters in three tankōbon 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.