He hated the dog in his house.
Because that dog is good for others, but because somehow he escapes or threatens to bark.
At last he could not endure that, killing the dog.
When he was washing his face at that night that night, I noticed that a man he did not know was reflected in the mirror.
An unknown man smiled and said to him in the mirror.
"I am thankful that you killed that dog, thanks to that dog barking, I could not enter your house, until now"