MINNA (: welcome to the spiral FAN CLUB . I wish all you ppl out there to join (: and please, if you are already in the fan club, invite your buddies [= arigatou gozaimasu
Narumi Ayumu's older brother Kiyotaka, a famous detective and pianist, disappears without a trace. The only clue as to his whereabouts is the "Blade Children", the only words Ayumu managed to catch in a final phone call from Kiyotaka. Two years later, a row of murders and incidents begin, all related to the Blade Children. Together with the infamous (and only) school journalist, Hiyono Yuizaki, Ayumu tries to figure out their destiny and the mystery shrouding their past.

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A B O U T - T H E - C H A R A C T E R S
(information from wikipedia, may have some spoilers so don't read if you don't want to read spoilers)
** Spoiler Alert!!! click to hide or show**
For the character descriptions I didn't put the full descriptions that they had in wiki, and some characters that they had listed on wiki I didn't put them here because they appear in the manga only.
If you go to wikipedia, you can find more info. about the characters here
http://en.wikipedia.org/wiki/List_of_Spiral_characters
You can find more info. about the anime here
http://en.wikipedia.org/wiki/Spiral:_Suiri_no_Kizuna
Don't read it if you don't want to read spoilers. If you read everything, please don't post spoilers here in the group.
Main Characters:
Ayumu Narumi
The protagonist of Spiral, Ayumu is very intelligent, but is very introverted and has a lot of self-doubt. He fears that he cannot surpass his own perfect older brother and doubts himself to the point where he no longer believes he can do anything anymore without acting like his brother. He is a talented pianist like Kiyotaka, an excellent cook, and cares a lot for his sister-in-law Madoka. His affection for Madoka (now as a "nee-chan") might also be because of formerly loving her, but stopped when Kiyotaka married Madoka. Ayumu is also the supposed only hope for the Blade Children and their survival.
Hiyono Yuizaki
The infamous school journalist, Hiyono is the bubbly and energetic sidekick of Ayumu, always stuck to his side. Very clever and a quick-thinker, her confidence borders dangerously on overconfidence. She is extroverted and is Ayumu's polar opposite, serving as one of the series' few comic-relief characters. Her skill with computers are as amazing as her hacking abilities and she has access to over one hundred resources. She blackmails Wataya often, and is very fond of Ayumu's cooking. Hiyono is also one of the few who whole-heartedly believe in Ayumu; she also has a great deal of faith and loyalty in him that carries on for the whole series. She attends Tsukiomi High School alongside with Ayumu Narumi.
The Blade Children
Eyes Rutherford
The 17 years old world-class pianist, he is second only to Kiyotaka Narumi, Ayumu Narumi's older brother. He is seemingly cold-hearted but definitely not heartless (he brought Rio melons when she was stuck in the hospital). Eyes is quarter English and debuted in the musical world at the age of 14. He cares a great deal about the Blade Children and would do anything for them to survive at all costs. He is exceedingly loyal to Kiyotaka's words and seems to believe in Ayumu the most out of all the Blade Children. Eyes knows much more than the other Blade Children do, holding secrets he keeps to himself. He is one of the first targets of assassination by the Hunters (after Sayoko) but outwits them at a charity concert with the help of Ayumu and Kousuke.
Kousuke Asazuki
The most arrogant, aggressive and most violent of all the Blade Children Kousuke is usually the implementor of assassinations. Kousuke is very strong-willed and stubborn, choosing to fight the Hunters head on rather than hide from them. He is not afraid to kill and does not really trust Eyes, resulting in arguments between them. While Rio calls him stupid, in reality Kousuke is very intelligent; after skipping most of elementary school, he still manages to catch up to secondary school level from reading and learning from books. Kousuke left middle school after a run in with a teacher. He is a childhood friend of Ryoko Takamachi, and probably has some romantic feelings for her.
Rio Takeuchi
The "midget" of the Blade Children group, she resembles a 13 year old child rather than her actual age, 16. Although Rio appears to be the most innocent of the Blade Children with her cherubic features and size, she is actually very shrewd and calculating. Rio knows how to create bombs, devise difficult plans and kill those she considers her enemies. Kanone even calls her a "fire pixie" in the manga for her small, impish appearance and skill with explosives. She is extremely intelligent and is able to escape from any sticky situation, no matter how small or tight it is. She is very straight-forward and has a crush on Eyes because he gives her 'netted pattern' melons (her favorite food). Like Kousuke, she will not hesitate to kill people if she has to.
Ryoko Takamachi
One of the most down-to-earth members of the Blade Children; Ryoko is a clever and athletic person, probably the most athletic of the Blade Children. She is a natural-born runner and can outrace almost anyone. She is a childhood friend of Kousuke Asazuki and, unlike the other Blade Children, she despises killing. She dislikes Eyes Rutherford due to past issues and cares deeply for Kousuke, though she has a tendency to use him as a punching bag and make him buy her food. Her past is relatively unknown, though it is hinted that something traumatizing happened while Kousuke and Eyes were present. She is reluctantly brought back into the conflict of the Blade Children by Eyes after losing to him in a simple game of dodge ball. She honours their deal to join with the rest of the Blade Children, with only one condition: she will not kill anyone.
Kanone Hilbert
A Blade Child with a dual personality. He could be cute and friendly or manipulative and insane. He was very close to Eyes. He would cry for Eyes when Eyes could not when they were young, but their friendship fell apart as they grew older and developed vastly different opinions on the fate of the Blade Children.
Sayoko Shiranagatani
Ayumu's sister-in-law and Kiyotaka's wife, she works as a police detective but is usually outsmarted by Ayumu in most cases. Her investigation skills are remarkable, but because of work she is rarely at home and therefore can do no domestic work. She cares a great deal for Ayumu. She is pretty selfish, not quite aware of the pain her brother-in-law endures because of how much he cares for her since she is his only family now that Kiyotaka has gone missing. Madoka tries to keep Ayumu from getting too involved with the Blade Children, but proves to be another weak spot of Ayumu and is often left in the dark by Ayumu about situations concerning the Blade Children for her own safety.
Supporting Characters
Madoka Narumi
Ayumu's sister-in-law and Kiyotaka's wife, she works as a police detective but is usually outsmarted by Ayumu in most cases. Her investigation skills are remarkable, but because of work she is rarely at home and therefore can do no domestic work. She cares a great deal for Ayumu. She is pretty selfish, not quite aware of the pain her brother-in-law endures because of how much he cares for her since she is his only family now that Kiyotaka has gone missing. Madoka tries to keep Ayumu from getting too involved with the Blade Children, but proves to be another weak spot of Ayumu and is often left in the dark by Ayumu about situations concerning the Blade Children for her own safety.
Suemaru Wataya
A detective in training, he works under Madoka and isn't very smart as he jumps to conclusions without thinking about a situation thoroughly. He is regularly blackmailed by Hiyono and often hangs out with Madoka in a bar.
Keishisei Kanzaka
A hunter on the police force only seen in the anime. He is constantly ragging on Madoka by telling her to quit or putting her on smaller cases, causing her to gripe about it to Wataya at the local bar. Kanzaka also abducted Rio and Hiyono, holding them hostage in an abandoned hotel in order to lure Kousuke, Ryoko, and Ayumu into a trap. He set up a complex trap with Kanone Hilbert involving the sewer systems. Kanzaka also encourages Ayumu to leave the Blade Children alone and says "I"d hate for you to make a choice that would sadden your sister in-law" signifying that he will kill Ayumu if necessary.
A B O U T - T H E - S O N G S
THE INFORMATION BELOW IS FROM WIKI. WITH A BIT OF A CHANGE, BUT STILL THE SAME IDEA
MAIN SONGS
Opening Song: Kibouhou (Cape of Hope) by Strawberry Jam
Ending Song: Kokuteru (Cocktail) by Hysteric Blue
Insert Song: Twinkle My Heart by Mitake Akira (sung by the character Hiyono Yuizaki)
MINOR SONGS - PIANO SONGS
Jeux d’eau by Maurice Ravel (episode 3)
Liebestraume No. 3 by Franz Liszt (played in concert by Eyes Rutheford in episode 13)
Benediction de Dieu dans la solitude by Liszt (episode 21; in the manga, this is a significant piece of music for Eyes and Kanone Hilbert)
Arabesque No. 1 by Claude Debussy (episode 25).