Kakuriyo no Yadomeshi

Aoi wants to work off her debt to the Tenjin-ya inn, but she only has one day to find a position and none of the managers are willing to hire a human! If she can just get someone to see past her family background, Aoi is certain she can prove her worth! (Source: VIZ Media)

Aoi, who inherited the power to see "Ayakashi" from her late grandfather, is one day taken to "Tenjin-ya," a long-established inn in Kakurei, the world where Ayakashi live. There, she is told that her grandfather once made a "certain promise" with the head of the demon god. The content of the promise was that "as collateral for his debt, he would give his granddaughter to the head of the demon god as a bride." (Source: Kodansha, translated)