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Kanan is a demon who descends upon the human world with one goal: to feast on the sweetest delicacy of all—young human souls. Disguised as a high schooler, she sets her sights on her first target, an unassuming boy named Youji Kyougi. But just as she prepares to claim her meal, things take a very unexpected turn. Instead of devouring him, Kanan ends up forming a "romantic contract" with Youji. For someone who's lived for millennia without experiencing love, navigating high school romance proves more terrifying than any hunt. Between awkward dates, hand-holding mishaps, and feelings she can't quite name, the once-proud demon finds herself flustered at every turn. A supernatural romcom about a lovestruck demon and the boy who was supposed to be her prey—sweet, chaotic, and full of firsts.