Rainbow: The Seven from Compound Two, Cell Six

Mario receives a visit from Jeffrey, the American boxer, who asks him to visit the Army Camp. Mario obliges and is observed by a professional boxing trainer who comments that Mario's broken right hand will make it impossible to box. He directs Mario to a doctor who may be able to heal his hand. The doctor explains that the surgery will restore his right hand with at 30% success rate but advises if the surgery fails, he will lose the use of his hand. Mario takes the deal remembering Sakuragi's words about taking chances, and the surgery is a success. When his hand heals, Mario visits Sakuragi's mother to pay his respects and is given Sakuragi's boxing boots before heading to his match. Mario, with his restored hand, defeats his opponent in his boxing match. He is later seen at the tree where he and his friends carved their life's dreams into and speaks to the late Sakuragi. After a spontanous rainstorm, an image of Sakuragi asks Mario what his dream is, to which he replies helping his friends achieve their dreams.

Lily and Mario find Turtle collapse from sickness. They take him to the doctor, who diagnoses it as just a simple cold with fever. Mario believe it to be more serious, but can't afford to take him to a larger hospital. Turtle begs the old man to lend him 300,000 yet so he can help Lily start her dream. Mario boxes the American GI again, to get Turtle an appointment with an American doctor. The old man tells Turtle that he'll lend the money, if he can get repayment on a loan from someone dangerous.

Mario bandaged Uncovered's wounds from the beating he received from Solider. Uncovered goes to the shrin to meet with Eri, as they'd planned. Instead, she meets up with someone else, leaving him waiting in the rain. Turtle meets with him later, while he's still desperately waiting for Eri. The gang cares for him, as he fell ill while waiting for her in the rain for hours. Uncovered reads in the newspaper that Eri and the other man committed suicide. He later finds out that Eri had lied to him about everything, further adding to his pain.

Cabbage contemplates getting a job. Turtle and Uncovered try and talk him out of joining the yakuza. He does anyway, and they are attacked. Mario, Turtle, and Uncovered desperately search for Cabbage, who went missing after the attack. They later find him, doing his new job...as a professional wrestler!

The gang settles in in Tokyo. Joe flashbacks to his beginnings as a singer, and his wish to be reunited with his sister by becomming famous. Turlte runs into Joe on the street, but Joe tells him to stay away from him. The rest of the gang gets togethre to celebrate New Year's. Joe learns he'll be performing at a festival, and his sister is revealed to be working as a hostess at a cabaret.

The gang executes a plan to prevent Mario from going to prison, and during the plan, the uncover how he really ended up with them in the first place.

Sasaki, unnerved by his encounter with the boys, locks himself in his office. His thoughts are interrupted by a phone call, and leaves to rendezvous with a 'lover' at a local motel. After arriving, Sasaki is horrified when Joe appears and draws a gun. Joe takes Sasaki to a beach where the other boys have dug a large hole near the water. Despite his attempts to bribe them, the boys bury Sasaki up to his neck as the tide begins to come in. Sasaki screams for mercy as the boys leave saying he'll confess everything. Just when it seems he's about to die, Sasaki wakes up in the motel, unable to discern if what happened was real or a nightmare. Setsuko finds Mario waiting for her and takes him to her apartment. Mario reveals that he spared Ishihara, saying he wasn't worth killing. The next day, Sasaki prepares to give a campaign address but becomes flustered when he sees Joe and Cabbage in the audience. In the sound booth, Turtle, Soldier and Uncovered play a recording of Sasaki confessing to all his crimes, including his part in Ei'ichi and Sakuragi's deaths. Exposed, Sasaki drops out of the mayoral race and loses his hospital. Setsuko prays at Sakuragi's grave saying that she and boys can finally move on. At the tree, Mario gives each of his friends a bullet taken from Sakuragi's body. Their revenge satisfied, they leave to begin pursuing their dreams. Mario looks back at the tree and sees an image of Sakuragi smiling back at him.

Mario finally succeeds in knocking out his opponent. Outside the police order Sakuragi to put down the knife, but Sakuragi's only thought is of returning the boxing match. Several Army MPs arrive, and in the confusion Sakuragi is gunned down, his final thoughts being of his friends and their dreams. Mario returns home and reveals Sakuragi's fate to Setsuko. Later at the morgue, Setsuko collapses in grief causing Mario to wonder where he and the others will go now that Sakuragi is gone. Time passes, and the six surviving friends finally meet at the tree like they promised. Mario relays Sakuragi's final wish that they all strive to fulfill their dreams. Mario and the others then promise to make Sasaki and Ishihara pay for killing Sakuragi. Later, they discover that Sasaki is now running for mayor. While Mario departs to track down Ishihara, the others begin a campaign of intimidation against Sasaki. Mario locates Ishihara, now a mentally-broken speed addict. Ishihara mistakes Mario for Sakuragi and ask to be killed. Mario, angered that Sakuragi lost his life because of such a pathetic man, prepares to kill Ishihara.

Sakuragi begins training Mario in boxing so he can win his next match. Turtle takes a job selling black market goods. At the school, Soldier learns that he's been accepted in the Japanese Defense Force and will be leaving the reformatory early. At the farmhouse, Setsuko suggests she and boys take a photo and later borrows a camera from a coworker at the hospital. Dr. Sasaki overhears her conversation and sends Ishihara to follow her, discovering Sakuragi's location. When they're alone, Setsuko confesses her feelings to Sakuragi. Sakuragi and Turtle accompany Mario to his next match, unaware Ishihara is following them. Turtle goes to the nearby market before the match, but is caught by the police. Learning Ishihara was responsible, Turtle attempts to phone the others. Lilly tells Sakuragi and Mario about Turtle being caught and Sakuragi leaves to find a phone. Mario begins his match determined to win. Elsewhere, Dr. Sasaki plots to dispose of both Sakuragi and Ishihara, who is now using speed and has become a liability.

Uncovered devises a plan to free Sakuragi and shares it with the others. Needing to get a key from Dr. Sasaki, Joe volunteers to go to the doctor's office, despite knowing Sasaki's perverted lusts. Joe fakes a stomach ache and is taken to Sasaki's office, where he 'flirts' with Sasaki. Joe convinces Sasaki to strip naked, and when his back is turned Joe strangles him with a cloth rope and ties him up. He returns to the cell and releases the other boys. Reaching Sakuragi's cell, Mario knock Ishihara unconscious and they carry Sakuragi away. A guard finds Dr. Sasaki tied up and sounds the alarm. Uncovered 'sacrifices' himself to draw the guards attention and manages to cut the electricity to the compound and search lights. At the front gate, Cabbage and Soldier stay behind to block the guards. Outside the compound, Ishihara ambushes the others and tries to stab Sakuragi with a knife, but Mario pummels Ishihara unconscious again. After eluding capture, Mario becomes depressed about losing the others, but Joe and Turtle state that it was Mario's determination which allowed them to save Sakuragi's life.

The other bullies attack Sakuragi, while Ishihara listens from outside the cell. Ishihara leaves content that Sakuragi will be bludgeoned to death by morning. In the morning, Ishihara opens the cell, but is horrified to see all the bullies beaten and bloody on the floor. Cowed by the beating they suffered, none of the bullies are willing to admit it was Sakuragi's fault, causing Ishihara to leave in a rage. Unable to intimidate Sakuragi, Dr. Sasaki suggests Ishihara make Sakuragi break the rules by hurting his friends. Realizing Ishihara's goal, the boys bear the abuse to protect Sakuragi. Sakuragi, no longer able to watch, grabs Ishihara and is in turn placed in solitary confinement. Ishihara plans to starve Sakuragi to death saying that he and Sasaki can't let him out because of what he knows. One year earlier, Sakuragi had a roommate named Ei'ichi who was sexually molested by Dr. Sasaki. Unable to live with the constant abuse, Ei'ichi committed suicide. Guard Kumagai reveals Ishihara's plans to the boys in 2-6. Turtle manages to sneak food to Sakuragi's cell, restoring his will to survive.

Uncovered can't believe Sakuragi would risk his own life for someone else, believing that you can only rely on yourself. Sakuragi arrives at the cell, but can't open the door. The building begins to collapse and Sakuragi is knocked down by flaming debris. Outside, Uncovered searches for the lost cell key and locates its. Ishihara arrives and demands the key but Uncovered refuses to give it up. Uncovered enters the building and saves Sakuragi and the others. They escape and then Sakuragi knocks out the shocked Ishihara. Sakuragi is taken to the hospital to recover from his injuries. He tells a nurse about how he greatly admired his father, a soldier. However, after the war, his father returned home a broken man. One night, Sakuragi confronted his father saying he had lost all respect for him. A short time later, Sakuragi's father commits suicide. Sakuragi believes he 'murdered' his father, because he didn't try to understand his father's pain and believes his hurtful words drove his father to kill himself. Sakuragi doesn't want to lose anyone else important to him and that the other boys are his best friends. Overhearing this story, the bond between the seven becomes even stronger.

The seven boys have become comrades and spend time working out in their cell. Joe reveals that he has a younger sister on the outside. Seeing her again is his sole motivation to endure the school. Joe later receives a visit from the orphanage administrator where his sister is staying saying his sister is about to be adopted. Afraid he will not see her again, Sakuragi and the other boys cause a distraction allowing Joe to escape through an unguarded entrance. The boys are beaten and placed in solitary confinement. Turtle recounts losing his entire family in the atomic bombing of Hiroshima and why he helped Joe escape. Joe arrives at the orphanage and attempts to escape with his sister but is caught by the police. Joe's sister 'rejects' him and sends him away (in an attempt to protect him). Distraught, Joe is returned to the school and placed in solitary.