As you can tell, I love the way they told this story. If they had a 20 in this section, I would give it. Now, I will tell my reasons.

You already know that this was a great thriller, as it keeps one guessing right up until the end. And your interpretations of the characters change on a pretty constant basis as the story progresses. Here's an example: I first hated Takumi, but at the end of the series, one could only feel jealous of the ------- with a certifiable harem of great women and the powers of a god. Perhaps this is all a little exagerated, but I think my point was made rather readily with that.

Thriller anime are either great or they suck. This was one of the great ones that came with a few bonuses, including some pretty good backstory and backworkings within the story.