Kuroneko Kareshi no Asobikata

Shingo possesses a unique ability: he can transform into a black cat at will. His peculiarity allows him to choose any partner he desires, as long as he is physically attracted to their face and body. However, Shingo is unexpectedly drawn to Kagami, the extremely popular male actor known for his irresistible musky scent. A chance encounter with Kagami leaves him smitten, and despite his initial reluctance, Kagami becomes addicted to Shingo's feline form, repeatedly returning to indulge in intimate encounters atop Shingo's flat abdomen as a beast.