At his late grandfather's house, Ken meets Kazune, a 'fox spirit' who claims to have known his grandfather. Ken, who has had a strong spiritual power since he was a child, is kissed as soon as they meet, and Kazune takes a liking to his 'spiritual power' that resembles his grandfather's. Kazune, who is lonely but acts tough, and who is stubborn, melts sweetly once they kiss, and begs for 'more,' and before he knows it, he has already stolen his heart. As time passes, Ken's beast-like desires accelerate, but there is a wall that must be overcome in order for humans and spirits to live together.
