Shiratama-kun

Yuusuke Shiratama is a 15-year-old in his first year of high school. Aoi Suzukawa is excited to start her high school life, but her classmate is a cat?! Due to some mutation, Shiratama has the same intelligence as any human. He was even brought up with a normal human family and is the world's first cat to have human rights. In-spite of the circumstances surrounding Shiratama, Aoi becomes extremely interested in him!

Shiratama, the sensitive feline high school student, will soon have his life turned into a school comedy!!

(Source: Shueisha)

Included one-shot:
Volume 12: Kuroneko to Kuro no Hibon