Synopsis: A Collar Only for You (Colored)

"I like to be slapped sharply, by a woman's... soft, supple palm..." I unexpectedly picked up a high school girl who had fainted in front of my apartment building. Even though she had bruises on her face, I still had to ask myself, "I wonder if she is even real, such a beautiful girl..." That night after I took in the mysterious beauty for medical treatment, she turned up in my bed...?