I watched this SP in preparation for watching Season 2 of Mikaiketsu No Onna. It was refreshing to watch an SP that matched the main series in terms of acting and story.
The story followed the template of the series well, with a strong focus on the two female leads. The SP opened with a scene described in a voice over as irrelevant but that turned out to be anything but.
The only flaw was the length. The culprit was obvious 15 minutes before the end, and much of the last 15 minutes was exposition that restated the obvious. Overall, a satisfactory warmup for Season 2