Catulus Syndrome
猫娘症候群(かとるすしんどろーむ)
A girl named Shirakaba Yuki has Catulus syndrome, causing her to grow cat ears, a tail, and display feline behaviors. During her high school entrance ceremony, another first-year student named Ayano Riko enters carrying a large group of cats, apparently naturally attracting them. The two girls meet and form a friendship.
