Kamisu Iori has reached that age where he desperately wants a girl, but he is about to get more than he bargained for. While napping in the forest, a cute girl with cat ears and a tail falls on him from the trees. She scurries away, and he chases her through a mysterious door located somewhere in the woods. Iori wakes up in a café, where he learns that kittens actually take the form of humans with cat ears and tails, just like Keena, the cute girl he was chasing. However, after accidentally breaking the door he came through, Iori must work at the café surrounded by "kittens" until it is fixed and he can return home.