“Relax and enjoy a pleasant conversation with the stars.”

After the incident with Assemblyman Aikawa, more people start coming to see Vivy perform on stage. One day, Matsumoto appears before Vivy again, and urges her to get on board the Sunrise space hotel with him. While they travel to outer space, Vivy is conflicted by the gap between what she must do and her true mission.

“I’ll perform perfectly as usual. To bring happiness to everyone with my singing.”

Diva’s daily performances on the main stage are sold out, and she has cemented her position as the indisputable AI songstress of NiaLand. She is invited to perform at the Zodiac Signs Festival, which will feature AI singers from around the world, but is pulled into a precarious situation during the rehearsal. At that moment, a cube-shaped AI that she has never seen before appears in front of her and…

“Nothing is more important than singing an amazing song…that will allow me to fulfill my life’s mission.”

Diva is astonished when she hears from Matsumoto that Vivy’s mission is to prevent a war between humanity and AIs. He also explains to Diva that his current aim is to stop Ophelia from taking her own life. Ophelia is a songstress AI who just finished an incredible performance during rehearsal. As a principle, AIs are forbidden from self-destruction, so Diva approaches Ophelia to prevent her from committing suicide.

“…What was she doing at the end?”

After awakening from her long slumber in the museum, Vivy witnesses a horrific scene where humans are being massacred by AI. The war between humans and AI has broken out, and amidst the confusion, Vivy meets up with Matsumoto. They recognize that the Singularity Project has been a failure, so they search for Dr. Matsumoto, who was the architect behind the one hundred-year journey, in order to resolve the situation.

“…My mission is to bring happiness to everyone with my singing.”

Vivy was the first AI to write a song with her own will. As the first AI to utilize her own creativity and being the AI that has had the most contact with humans in the one hundred-year journey, the Archive entrusts Vivy with a choice that will determine the survival of humanity. Vivy is almost crushed by the weight of this responsibility, but after being urged on by Matsumoto, who has been her partner for the last one hundred years, and seeing Dr. Matsumoto’s risk his life for everyone, she executes the Singularity Project in order to save humanity. Using this last chance, will she be able to fulfill her mission of bringing happiness to everyone with her singing?