The Calico Cat Inn, where the young dragon Kurokaze works, is famous for its delicious cuisine and is a purveyor to monsters. Ryoya, a greedy fox who always brings trouble, has been living at the inn for a long time. One day he finds a painting he has been looking for for many years at an antique market, but it winds up in the hands of a demon general. When he goes to ask Yoshiya to give him the painting, Benimaru, the general's younger brother, who likes Yoshiya, forces him to become his "mistress!" Kurokaze learns of Yoshiya's strong feelings for the artist that have lasted for 100 years, he turns away from the feelings in his heart and rides into the demon's mansion. A story of a caring and hard-working waterfall dragon god x a single-minded monster fox who is unaware of nature, and heartbreaking love that was born quietly in a world inhabited by beasts and demons.
龍の青年・黒風が働く「三毛猫旅館」は料理の美しさ・旨さで有名な妖怪たちの御用達。
旅館に長らく居候している食いしん坊の狐・良夜はいつも厄介ごとを持ち込んでは黒風を振り回している。
良夜は長年探し求めていた日本画を骨董市で見つけるが、一足違いで鬼の大将に買われていた。
絵を譲ってくれるよう頼みにいくと良夜を気に入った大将の弟・紅丸に「愛人」になれと迫られてしまう。
良夜の絵師に対する百年続く強い気持ちを知った黒風は、自分の心に生まれた想いから目を反らし、ともに鬼の屋敷へと乗り込むが――・・・。

世話焼きで苦労性な滝の龍神×天然無自覚・一途な化け狐
獣と妖たちの住まう世で、そっと生まれた切ない恋の物語。