Arietta Antiphon/Story
NOISZ Ignition
After the main character fights off Jonathan, Arietta asks Beyond not to let the main character discover anything unpleasant.
In Story B, Arietta guides the main character to new targets in the World of Music. Then, she takes them to the beach in the human world to defeat Seiryu, Suzaku, and Byakko. Once the NOISZ consumes their soul and turns them into a NOISZ Beast, she uses them to continue gathering energy.
In Story C, Arietta steps out of a decontamination capsule, complaining about the impracticality of the procedure. Despite the procedure, the computer still detects the presence of an anomaly. As Arietta tries to get more information about the situation, a dark mass creeps up on her. The dark entity tries to convince Arietta to let it help, but Arietta refuses. As she tries to hit a nearby button, she finds herself unable to move her hand, and the entity possesses her.
Arietta complains about Beyond's plan being unreliable and resolves to take matters into her own hands.
Arietta appears in the World of Music, using technology to forcibly corrupt Stella, Luna, and Marziale. After the main character purifies Marziale, Arietta appears before them. She sends Stella and Luna to attack everyone, tells the main character that she'll reveal everything if they can follow her, and returns to the human world.
After the main character returns to the human world, they see Arietta using her technology to hurt and control Seiryu. Arietta asks the main character to defeat Seiryu in exchange for information. They do so, and Arietta answers the main character's questions about the NOISZ, namely how she and Beyond intend to harvest the energy the main character has gathered. Karin gets angry from this explanation and charges at Arietta. Arietta traps her within a single-use capture device.
Arietta then sends Suzaku and Byakko to attack the main character.
After defeating the remaining NOISZ Beasts, the main character attempts to attack Arietta next, only to be stopped by Beyond.
After the main character fights Beyond, the entity that has been possessing Arietta leaps into Beyond's body. Arietta begs them to run away.
When the main character trapped is within the Void, Arietta asks them to use her power and save her sister.
After the fight with Beyond in the Void, the entity that had been possessing Arietta convinces her to absorb Beyond's energy into herself using her own NOISZ. This causes the two to fuse into a single body, which is entirely controlled by this entity, named Alpha.
NOISZ re:||VERSE
Throughout NOISZ re:||VERSE, Alpha controls Beyond and Arietta's fused body until the main character defeats her.
In Blue Route, the main character defeats Alpha, who takes on Arietta's appearance, by imprinting Beyond. After the fight, Beyond's body fades away.
If the main character chooses to revive the Noise Beasts, Beyond says one final goodbye to Arietta, then disappears completely. Arietta takes over Antiphon and shifts its focus toward the World of Music. She visits her mother Miria in the World of Music with the main character.
If the main character chooses to revive Beyond, her body is completely remade, now free from Void corruption. She inherits Antiphon, and Arietta takes business classes to assist in running the company.
In Red Route, the main character defeats Alpha by imprinting Arietta. After the fight, Arietta's body fades away.
If the main character chooses to repair the boundary, Arietta says one final goodbye to Beyond, then disappears completely.
If the main character chooses to revive Arietta, her body is completely remade, now free from Void corruption. Beyond inherits Antiphon, and Arietta takes business classes to assist in running the company.
If Stage X8 is completed, regardless of starting route, Arietta's body is completely healed. She works to finish high school while also working in record producing at Antiphon. She meets up with the main character and everyone else at a café in Antiphon. They hang out and eat together.
