Spiral

Summary:
Ayumu Narumi's brother, Kiyotaka , disappeared all of a sudden 2 years ago leaving behind the only clue - Blade Children. Kiyotaka is a renowned pianist and detective. A series of murder related to the Blade Children prompted Ayumu to go in search of the identity and destiny of the Blade Children.

PhoEnix's Comments:
Mind-boggling.

Songs:
Opening Theme:
"Kibouhou" by Strawberry Jam
Ending Theme:
"Cocktail" by Hysteric Blue

Related Links:
JC Staff Official website (Japanese) - http://www.jcstaff.co.jp/sho-sai/spr-shokai/spr-index.htm
FUNimation Official website - http://www.spiral.tv/
Wikipedia - http://en.wikipedia.org/wiki/Spiral:_Suiri_no_Kizuna
Anime News Network - http://www.animenewsnetwork.com/encyclopedia/anime.php?id=1819

Watch:
http://www.youtube.com/ChibiPresea