A straight policeman crosses over into an ancient version of a Mary Sue novel and becomes a super cannon fodder, so he starts a life of peace and quiet. He thought that the person he was going to marry was a supporting role of an idiot with an empty skin, but he didn't expect that he turned out to be the scheming second male protagonist in the novel. Treat him obsessively, treat him like a child, flirt with others without realizing it, bend the other person without realizing it, and then be used by him, only to find out the real face of the other person, escape and continue to enjoy life in a different place, not wanting to be captured by the fool prince more than a year later...
Concept: Reunion through broken mirrors, through books