The legendary ancient monster Nine-tailed Fox breaks into the home of an ordinary high school student. Since then, life has changed dramatically! Not only are there a lot of jokes, but there are also disasters. More and more monsters appear, and the peaceful life is broken!
Where did these two nine-tailed foxes come from? What kind of life experience do they have? What is their past? There are mysteries one after another behind this.
[Original name: My nine-tailed fox siblings have arrived]