Yongsa Iyagi

The legendary hero who, as the chosen champion of the goddess, defeated the evil dragon and saved the Sanhosu Kingdom. However, what remained for her was neither honor nor wealth, but only dire poverty. In her attempt to earn money to rebuild her ruined village, she falls for the trickery of the disguised Demon Lord and ends up bound by magic handcuffs that seal away her powers… (Source: Ridibooks, translated)