Swordsman-chan is lured into a dungeon by Adventurer-chan, forced to wear a costume that has a brainwashing effect, and becomes a slave wife
(C95) Fujinoki Nene no Onii ni Ienai Koto | What Fujinoki Nene Could Never Tell Her Brother (Hajimete no Gal)
Eien, Kaimasu ~Mahou de "Hime" ni Sareta Yuusha to, Maou no Monogatari~ | Forever a Bride: The Story of a hero magically turned into a "princess" and a Demon King