Erina Wada, a composed student among her peers, finds herself completely smitten by cats, transforming into a giddy mess at the sight of one. When she bravely rescues a cat in distress in her own backyard, little does she expect it to change into a naked man upon her affectionate kiss. Initially dismissing the incident as a mere dream, Erina is bewildered when the cat-turned-man, Kou Nekoyama, appears before her once more, claiming her as his master. Struggling to grasp the reality of this peculiar bond with the enigmatic shapeshifter, Erina is left in a state of utter confusion and intrigue. How will this unexpected relationship unfold between a high school girl and a mysterious being with the power to transform at will?