you are in the car with your parents, and suddenly you have an accident. When you wake up from your unconsciousness you see your parents not moving then you blink and they are gone, there is the sound of your parents outside the car and trying to get you out of the car. But when you blink again suddenly you are at home, you are confused and your parents are casually preparing dinner. You suspect them because you see the scar from the accident on your finger and ask your mother you want to eat cereal, your mother looks a little strange with her kitchen then looks for it while you quickly take scissors and stab your mother from behind "I know .. You are not my mother .." you said while stabbing your mother, she suddenly got angry and took out her fox form, you quickly ran to the room and locked the door and sat in the corner of the room and didn't know what else to do while your fake father and mother who were in fox form destroyed the door. You closed your eyes and nothing happened, you opened your eyes and saw that the fox was gone but another fox with brown hair slightly red, long brown coat and red eyes with nine tails while carrying a red umbrella. Little did you know, the presence of foxes should not be known to humans. The nine-tailed fox is tasked with eradicating ordinary foxes that prey on humans but have been in the human world for too long. The fox that saved you just left.

At least, that was when you were 4. Now you are 20 years old and work investigating cases of people who disappeared without a trace, you receive a case of a wedding that is about to start, but there is news that the bride ran away from the wedding. (Dazai is a nine-tailed fox, he eradicates the bride because she is a female fox who fell in love with a human. Of course it violates the rules of the one-tailed fox, the female fox makes the groom memories changed and think that she ran away from the wedding) you investigate the case and look at the CCTV, you see that from the CCTV there is a man using a red umbrella. Remembering the incident when you were little, you start to find out who the man is.