Koyoi Kimi to Kiss no Chigiri o Series by Saki Aikawa

Koharu discovers that she now has the power to heal demons like her late grandmother did. The overly self-confident fox demon Iori takes a liking to her. The sudden kiss was a ritual of engagement?! What will happen to Koharu now that she has to live with Iori in human form...?!

Koharu goes to the world of the Tengu with the fox demon Iori. The king of the Tengu asks Koharu to stay for a week and act as the fianc? for his heartless son, Jirobo and...?!

Koharu, who was attacked by a demon and had her powers taken away so that she couldn't see Iori or other demons anymore, also had the mark of engagement from her chest erased... What will happen to the love story between the fox demon and human...?! This dangerous love story will come to an end!