Katorusu Shindoromu, Nekomusume Shoukougun, 猫娘症候群, Hội chứng miêu nữ, Синдром кошеня
Catulus Syndrome - A strange illness which causes girls to develop catlike traits. Modern science has figured out two things about this illness: 1. They're really cute! 2. There's a high chance of other girls making their hearts flutter.