Since the war with Belladonna, Nightingale and her sisters have been fruitlessly travelling the land, searching for any leads or clues that might give them a clue as to where Belladonna's main stronghold is and what they are to do to defeat her. So far, their search has been in vain, but all that changes very quickly when the group meets a young, disillusioned demon named Inuyasha. Having been pinned to a huge marble column by a spear and cast into an eternal sleep, all Inuyasha can think of is getting revenge on his mother. Nightingale allows him to travel with the group, which he quickly accepts, yet as the journey progresses, both Inuyasha and Nightingale begin to develop feelings for each other, but Nightingale, having denounced love since the war began, won't even think of professing her love for Inuyasha, and Inuyasha, having been in love before, thinks he'll make his previous lover angry should he replace her with Nightingale. Given the circumstances, what are a demonslayer and a demon to do?