This article is a disaster fanfic by Saiki Kusuo, the male protagonist is Aren Utani.
"Onii-chan, do you want to be a police officer?"
"Yes, girl, isn't my brother handsome?"
"Handsome! Then I will be the woman behind my brother from now on!"
"Okay, my little hacker."
——From a conversation between a certain sister-in-law and her younger sister, but one day——
"Onii-chan! I don't want to be the woman behind you anymore, I want to be the woman behind another boy."
"What! What kind of wild boy dares to rob my sister?"
"The neighbor's kid, his name is... ."
Intent: Ya Lian's fan fiction