Synopsis
The wheel of fate turned when Kiyotaka Narumi vanished. On that night Kiyotaka’s younger brother, Ayumu, was forever changed. Ayumu found himself thrust into the baffling mystery of the Blade Children. Who are they? What have they done to deserve their fate? Why do they believe Ayumu is the key to their salvation? Only one thing is certain: The Blade Children will stop at nothing to complete their destiny. And only Ayumu stands in their way.

Review
Spiral is a rather interesting anime. It almost seems to shift genres towards the end of this volume. It starts out as a bit of a mystery series with a bit of comedy, as Ayumu uses his amazing intellegence and power of deduction to solves Sherlock Holmes-esqe mysteries, and Hiyono provides comedy relief. And while these episodes are interesting, they don’t further the plot and are kinda useless. The plot does heat up when in fourth (of five) episode. That is when the secret of the Blade Children is revealed and Ayumu starts to search for his missing brother. So, in short, the story is good, but you do have do wade through some usless fodder to get there.

The Breakdown
If you have the patience to wait through the slow parts, you will be rewarded well.