Nekomusuke Over Ecchi!

A pharmaceutical company got bankrupt, because of that the project that still in the middle of development, had to permanently stopped. The drug’s sample was also disposed. But the disposed drug was swallowed by the hungry cats around the street. The cats that swallowed the drugs suddenly takes form of a human and became a cat-girl. The only way to bring them back to their original form is to have sex and pour a semen into them.