It is the Taisho period. A straight-laced man named Shougo works as a teacher for an all girls school, and lives with his black cat named Kuroi-san. Then one day, his nephew brings him a tight-lipped servant...

In the pet shop he calls home, a chubby, homely cat whiles away the hours listening to coos of delight from potential pet parents...but he knows it's not him they're fussing over. Even as his price drops wit...