Random rough if plot: Matsuda Jinpei was actually a organization member and he was still alive. (No details of how this plot works)
In my head, he was a member after graduating Police Academy. Skipping the details, his existence in the organization is a top secret.
Gin did not like him because of … seniority? Like, I am more skilled and in this organization longer than this brat, but how can people act like he is more important?? Super sure some of the other members who knew his existence also think like this.
What I want to say, I want a antagonist Matsuda Jinpei who can make a super mean expression and see the face of betrayed Furuya Rei when he actually met him as Bourbon.
But, seriously, it is really hard to fill up the details to make this plot works.
I guess I just want an antagonist Jinpei X Rei.