Rainbow: Nisha Rokubō no Shichinin

Block 2, Cell 6

• Rokurouta Sakuragi (桜木 六郎太)
• Nicknamed "Bro" (アンチャン) for his protective nature, he is a senior inmate in Block 2, Cell 6 imprisoned for assaulting an American soldier. An aspiring boxer, he mentors six fellow prisoners, teaching them perseverance through his philosophy of "love and courage." His incarceration stems from taking responsibility for Tetsu Sakota's murder of an American soldier after a rigged boxing match. Despite learning this truth, he maintains loyalty to Sakota. After escaping briefly and forming a relationship with nurse Setsuko, he is fatally shot by American soldiers following manipulation by Sasaki. His legacy lives on through his will and a bullet passed to his inmates, along with a secret compromising Officer Ishihara's career.
• Mario Minakami (水上 真理雄)
• Mario, imprisoned for attempted murder, possesses a volatile temperament balanced by fierce loyalty. The last of his group to be released, he recovers from a crushed right fist through risky surgery. Inheriting Rokurouta's aspirations, he trains to become a world boxing champion. After placing boxing shoes at Rokurouta's grave for the latter's mother, Mario gradually assumes Rokurouta's physical resemblance. He survives near-fatal injuries sustained while rescuing Setsuko from criminals, though loses vision in his left eye. Supported by Cabbage and Jimmy, he trains in Hawaii while drawing strength from Rokurouta's legacy. After honoring his promise to Rokurouta with Sakota, Mario departs for the United States to pursue personal fulfillment, remaining the only character without a definitive conclusion.
• Noboru Maeda (前田 昇)
• Nicknamed "Turtle" (スッポン) for his biting attacks, he is imprisoned for grand larceny. An orphan of the Hiroshima atomic bombing, the short-statured convict bears distinctive 10-yen coin-sized bald spots. A natural businessman with aspirations of wealth, he maintains close bonds with cellmates Cabbage and Scam. Upon release, he establishes Maeda Finance after working in black markets and moneylending. His financial acumen allows him to support former inmates while building his own fortune, eventually owning two buildings and nearing his millionaire ambitions.
• Tadayoshi Tooyama (遠山 忠義)
• Nicknamed "Soldier" (ヘイタイ) for his military aspirations, he is imprisoned for violent conduct and unlawful confinement. A physically imposing yet principled man with distinctive facial scars, he joins the Japan Self-Defense Forces upon release. His military career ends when he assumes blame for crimes committed by a foreign con group to protect Mario, resulting in imprisonment. After his release, secured by Scam's efforts, he becomes a reformatory guard providing emotional support to inmates. Personally, he marries Meg (Joe's sister) and starts a family while continuing his rehabilitative work.
• Ryuuji Nomoto (野本 龍次)
• Nicknamed "Scam" (バレモト) for his personal motto, he is incarcerated for fraud, embezzlement, and theft. The wartime death of his father in Manchuria left him distrustful until helped by strangers. Recognizable by his slipping glasses, he maintains a brotherly bond with Turtle. After release, he studies law under prosecutor Takada while attending night school, though he has failed the bar examination seven times. His efforts focus on reducing Soldier's legal charges for crimes committed by a foreign con group. He supports his mother and two younger brothers who share his resemblance.
• Jou Yokosuka (横須賀 丈)
• Nicknamed "Joe" (ジョー), he is imprisoned for assault and illicit sexual conduct. A mixed-race orphan with distinctive blond hair, blue eyes, and a facial mole, he endured childhood sexual abuse at an orphanage before being separated from his sister Meg. After their eventual reunion, he supports her relationship with Soldier. Pursuing a singing career, he initially performs in bars before achieving mainstream success. His fame grows substantial enough to attract devoted fans. As an established performer, he assists the criminal Sakota to honor a promise made to Rokurouta.
• Mansaku Matsuura (松浦 万作)
• Nicknamed "Cabbage" (キャベツ) for his Ariocarpus retusus shoulder tattoo, he is imprisoned for assault and public intoxication. A physically powerful but simple-minded man, he struggles to find direction after release until becoming a professional wrestler through Aritou's assistance. As "Mammoth Matsuura", he builds a wrestling career in the United States while supporting Mario's rehabilitation in Hawaii. He maintains contact with former inmates and eventually marries Ruriko.

Friends

• Setsuko Koike (小池 節子) / Setsuko Norimatsu (則松 節子)
• A nurse who shelters the escapees from the reformatory, she was once Rokurouta's lover. When Mario develops feelings for her, she briefly reciprocates before leaving him. She later marries Yasurou Norimatsu, with whom she has a son, Takurou. Despite the challenges of single motherhood and the turmoil caused by the foreign con group, she leads a stable life working as a nurse at Higashida Hospital.
• Lily (リリィ)
• A prostitute with connections to the U.S. military base, she assists the seven inmates through her relationship with a high-ranking officer. After losing her savings during the officer's repatriation, she works as a live-in domestic helper before establishing her own restaurant. She becomes a supportive maternal figure for the six inmates and Meg.
• Meg Yokosuka (横須賀 メグ)
• Meg, Joe's younger sister, is adopted at age 12 by a promiscuous man while her brother remains incarcerated. She initially rejects Joe's rescue attempt to protect him, enduring subsequent sexual abuse before escaping at 15 to work in cabarets. Later assisting Lily in her restaurant, she marries Soldier and remains steadfast during his imprisonment. After fulfilling Rokurouta's promise, she becomes pregnant and finds personal happiness.
• Ruriko (ルリ子)
• A third-generation Japanese American from Hawaii, she travels to Japan for homemaking training. Assigned to motorcycle traffic control under Turtle's supervision during compulsory service, she develops romantic feelings for Mario. However, recognizing his unresolved attachment to Setsuko, she withdraws from the relationship. She subsequently marries Cabbage.
• Iwasaki (岩崎)
• A member of the Japan Self-Defense Forces and Soldier's junior, he avoids juvenile reformatory for theft by enlisting through a regional liaison. Initially unable to swim, he overcomes this weakness during the Kano River typhoon rescue operation while working alongside Soldier. Later, he fulfills his promise to Rokurouta and sees Mario off to the United States in place of Soldier, who is imprisoned.

Shōnan Special Reformatory

• Ishihara (石原)
• A jailer at Shōnan Special Reformatory, he conspires with Sasaki to prevent Rokurouta's release due to Rokurouta's knowledge of a past incident. His actions contribute to the deaths of his colleague Kumagai and Rokurouta. Addicted to stimulants, he suffers severe physical and mental deterioration, eventually losing the ability to distinguish between Rokurouta and Mario. His condition worsens to the point of permanent disability.
• Gisuke Sasaki (佐々木 義助)
• The reformatory's commissioned doctor abuses his position by sexually assaulting incarcerated boys. When Rokurouta discovers evidence of his misconduct, the doctor conspires with Ishihara to suppress the information. Later, after mortgaging a hospital to fund his campaign, he becomes the leading mayoral candidate until the six inmates publicly expose his crimes during an election speech, costing him the race.
• Kumagai (熊谷)
• A compassionate and sympathetic figure unlike Ishihara, he earns the trust of the seven inmates, who refer to him as "Dr. Kumagai". He secretly supports them despite surveillance by Sasaki and Ishihara. When Ishihara discovers his actions, he is killed in a staged accident.
• Eiichi Hagino (荻野 栄一)
• Incarcerated at Shōnan Special Reformatory for robbery, he becomes Sasaki's pawn after being promised a reduced sentence—a promise later broken, driving him to despair. Before committing suicide, he confides in Rokurouta, revealing the truth and evidence of the incident.

Manga

Rainbow is written by George Abe and illustrated by Masasumi Kakizaki. Abe wrote the series based on his own experience in prison.[2] The manga started its serialization in Shogakukan's manga magazine Weekly Young Sunday on November 21, 2002. After Weekly Young Sunday ceased its publication on July 31, 2008,[6] the series was transferred to Weekly Big Comic Spirits, starting on June 15, 2009.[7][8] The series finished on January 4, 2010.[9] Shogakukan collected its chapters in twenty-two volumes, released from April 5, 2003, to February 27, 2010.[10][11]

Anime

An anime television series adaptation was produced by Nippon TV, VAP, and animation studio Madhouse, directed by Hiroshi Kōjina, with Hideo Takayashiki handling series composition, Ai Kikuchi designing the characters and Yū Takami composing the music. The series ran for 26 episodes on Nippon TV from April 6 to September 28, 2010.[12] The opening theme is "We're Not Alone", performed by Coldrain, and the ending theme is "A Far-Off Distance", performed by Galneryus.[13]

The series was simulcast by Funimation with English subtitles in 2010.[14] In October 2023, Discotek Media announced that it had acquired the series. It was released on a Blu-ray Disc set, including Japanese audio with English subtitles, on February 27, 2024.[15][16]