“I want to protect your smile, because you love AIs.”

After the Sunrise incident, the audiences for Vivy’s stage performances grow day by day. Matsumoto appears once again in front of Vivy and informs her that AI technology is advancing quicker than what was recorded in history. In order to stop this, he states that their new mission will be to shut down the unmanned plant on the ocean, Metal Float. Matsumoto and Vivy rush to meet the researcher who helped to build this plant.

“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.