From MangaHelpers:

Suzukawa Aoi enters her high-school years with mixed emotions of nervousness and anticipation, but not for long. Her nervousness gets blown away when she finds that one of her classmates is a talking cat. The cat introduces himself as Shiratama Yusuke, and he has the IQ of a normal human being. Aoi doesn't care that all of her other classmates keep their distance from their new feline classmate. Her keen interest in Shiratama-kun knows no bounds. [DrCoke]