Absolutely fantastic. A meaningful and interesting DLC that expounds upon maybe the most interesting character in the Judgment games: Masaharu Kaito. After this game, I don't know if it's a hot take, but I would absolutely love to see Kaito get his own entire game, maybe even more than Yagami getting another, though I know why RGG would prefer Yagami as a protagonist. The story is really heartfelt and the main villain is one of the series' best.

an actual RGG game with an actual happy ending. 10/10

What's there is incredibly good but the issue is that there's not really enough of it. If they made this its own game in a similar fashion to Gaiden I think this would be one of my favorite games in the series.