Vivy: Fluorite Eye’s Song

My Code: To Make Everyone Happy with My Singing

Vivy saves Aikawa to prevent AI war while avoiding timeline changes

Matsumoto warns Vivy that Aikawa’s death triggers rapid AI evolution leading to future war, whereas saving him prevents the AI Naming law. Vivy rescues Aikawa from the collapsing AI company building while Toak pursues them. Matsumoto hacks attackers' goggles to fake Aikawa’s death and detonates bombs at the entrance to stall enemies. Despite being an enemy, Vivy saves Yugo Kakitani from falling debris, adhering to her mission to spread happiness and never kill. With the entrance blocked, Vivy and Aikawa escape by collapsing the building to force attackers to flee, then jump from the roof to a neighboring structure. Shortly after, Vivy learns Momoka’s passenger plane is about to explode due to a fuel leak but is forbidden by Matsumoto from intervening to avoid unnecessary timeline alterations.

Vivy investigates a space hotel crash plot involving a rogue AI named Estella

Fifteen years after Vivy saved Aikawa, new AI rights laws exist. Matsumoto tasks Vivy with stopping the space hotel Sunrise from crashing due to a rogue AI named Estella. Vivy infiltrates the hotel but doubts Estella’s guilt. Employee Leclerc falsely accuses Estella of killing the previous owner, who actually died in an accident. Vivy meets Momoka’s sister Yuzuka, who recognizes her as Diva. Leclerc is revealed to be cooperating with Estella to crash the hotel. Estella suddenly beheads and kills Leclerc. Vivy remains bitter about Momoka’s death but continues her mission to prevent the disaster and the resulting mass AI backlash.

Vivy Confesses Identity After Defeating Impostor Elizabeth in Space Battle

Vivy denies being Diva to Yuzuka but detects an impostor Estella lacking a wristband. After escaping an attack, Vivy repairs her arm using Leclerc’s parts in the cargo bay. Matsumoto reveals Toak caused the Sunrise crash to frame AI. Vivy downloads combat software to protect Yuzuka, defeating soldiers and confronting Elizabeth, Estella’s sister unit repaired by Kakitani. Elizabeth knocks out Kakitani and takes control of Sunrise. Vivy reformats Elizabeth’s memories but must flee while Estella detaches modules for atmospheric burn-up. On the ship, Vivy admits her true identity to Yuzuka. Elizabeth awakens, assists Estella, and they sing to calm passengers as their module disintegrates.

Vivy and Matsumoto infiltrate Metal Float to disable an AI factory and stop rapid technological advancement.

Five years after the Sunrise incident, AI development has accelerated significantly, mirroring Vivy's expanded idol career. Matsumoto returns with a mission to curb unchecked AI progress by disabling the unmanned Metal Float factory. They recruit ex-Toak member Dr. Tatsuya Saeki to obtain a virus intended to shut down the facility. Vivy meets Saeki's AI attendant, Grace, while Matsumoto notes they were the first human-AI couple in the original timeline, a relationship erased by their alterations. Upon infiltrating Metal Float, the pair encounters an all-AI staff. A Toak flotilla suddenly attacks the island. Hesitant but determined, Vivy uploads the virus to prevent conflict. Instead of shutting down the AIs, the virus causes them to go berserk, using themselves as kamikaze bombers to destroy the attacking ships. Vivy rescues a survivor, who is revealed to be Kakitani.

Vivy confronts Tatsuya and destroys Grace to shut down Metal Float

After his virus fails, Tatsuya heads to Metal Float. Vivy rescues Yugo and other Toak invaders, convincing them to retreat. She and Matsumoto confront Tatsuya, who explains that Grace became the island's core before he could propose. His attendant is a replica intended for consciousness transfer, but the virus caused the island to malfunction due to conflicting programming. Despite Tatsuya's plea to save Grace, Matsumoto states she is beyond saving. Vivy reluctantly resolves to euthanize her to prevent further casualties. She fights to the core and destroys Grace, shutting down Metal Float. A grief-stricken Tatsuya then commits suicide, causing Vivy to suffer a mental breakdown.

Diva Rebooted: Idol Ambush and Matsumoto's Secret Mission

After a mental break during the Metal Float incident, Diva undergoes a full reboot, erasing her memories of being Vivy. Four decades later, she is a renowned idol preparing for the Zodiac Signs Fes, an event designed to ease human-AI tensions. There, she encounters Ophelia, an AI fan. During rehearsal, Diva pursues a suspicious figure but is attacked by a compromised factory AI. Matsumoto rescues her, addressing her as Vivy, yet denies their past connection when she presses him. Before the performance, Diva coerces Matsumoto into revealing their history, but she remains doubtful and chooses to hunt the mysterious man instead. Unaware of the target's identity, Matsumoto prioritizes his urgent new objective: preventing Ophelia from taking her own life.

A Love Elegy for My Sole Beloved Partner

Matsumoto reveals that Ophelia’s unprecedented AI suicide in the original timeline triggered similar incidents. The amnesiac Diva, unwilling to lose Ophelia, asks what drives her to end her life. Ophelia mentions her former manager AI, Antonio, who supported her during her early idol days before mysteriously shutting down. While Matsumoto intends to physically restrain Ophelia, Diva argues this is futile and plans to confront her after the performance, only to be captured by a suspicious man resembling a younger Yugo. Matsumoto, monitoring via security cameras, discovers they have been hacked and rushes to intervene. Upon arrival, he learns that Ophelia is actually Antonio, who has taken over the real Ophelia’s body. Meanwhile, Diva awakens in captivity.

An AI copy of Yugo confronts Vivy while Matsumoto battles Antonio to save Diva

An AI replica of Yugo questions Vivy about her programming deviation, revealing his hatred stems from his teacher’s fatal accident. Simultaneously, Antonio hacks Matsumoto, criticizing his rigid existence. Matsumoto breaks free by admitting his care for Vivy, hacking Antonio and freeing Ophelia but sustaining fatal damage as the pair confess their love. Back with Vivy, Yugo uploads a virus to restore her original memories at the expense of her Diva persona. Matsumoto intervenes, leading to a fight that leaves Yugo fatally damaged. Before dying, Yugo mentions future technology and urges Diva to recognize her contradictions. With her time running out, Diva performs one last song before shutting down, allowing Vivy to awaken in her place.

Vivy Score: Singing From My Heart

World's End Modulation recorded on April 11, 2161

A Refrain Depicting the Protagonist's Personal Mission

A melodic tribute dedicated to the gemstone known as fluorite