After file 1105, what’s your theory on who Kuroda is?

I think Kuroda was always related to the NPA/PSB. He probably either was officially sent to America to protect Haneda Kohji as the son and future heir of one of the richest men and most influential men in Kyoto. Or it could have been a personal favor supposing Kuroda was originally acquainted with Haneda Yasuharu.

I believe that even if Kuroda and Yasuhara weren't acquainted 17 years ago, they probably are acquainted now. Because in files 1088-1090, Kuroda kept saying he had something to do in Kyoto. I personally believe he was going to meet Haneda Yasuharu.

That could also explain the acquaintanceship between Kuroda and Muga Iori (If he's indeed Akai Tsutomou), because Haneda Yasuharu would be the common link between both characters. After all, it has been directly revealed Akai Tsutomou and Haneda Yasuharu are friends.