Nu/Chronology

Tragic Life
While her original name is no longer spoken, Nu was once a noble daughter of the marquess family that dutifully followed the demands of her parents. She once attended Midgar Royal Spellsword Academy and was engaged to Marco Granger, content with the easy life her station afforded her. However, when she developed the Demon Possession, her horrified parents disowned her and cast her out, only to be found and healed by Shadow Garden, who took her in, told the truth of the Cult, and she swore allegiance to Shadow Garden.

The Midgar Academy Terrorist Attack
Although the newest member at the time, Nu swiftly earned a Named Number rank and was recognized by Alpha herself, and assigned to service under Gamma. Nu first appeared greeting Cid Kagenō and his friends outside the Mitsugoshi branch in the Midgar Capital, and led Cid to the executive residence where Gamma awaited their master. After being informed about the impostors, Cid decided to head out and Gamma formally introduced Nu to assist him. The two successfully captured one of the impostors, who Cid ordered Nu to personally deal with, and Nu proceeded to torture her captive, informing him that she wouldn't be as merciful as her master. She then hanged the corpse to deter anymore impostors from attempting the same thing he did.

Shortly after, Nu disguised herself as a student and met her master as he was continuing as Cid at the Midgar Academy to inform him about the imposters who called themselves "Shadow Garden." She told him as much as she could from her interrogating the imposter, byt since his mind was already broken, she couldn't give much of a report. She relayed to Cid about the hierarchy within the Cult of Diablos, from the Third, Second, and First "Children," elaborating the lieutenants known as a "Named Children," and those in control of the Knight of Rounds.

When the terrorist attack on the Midgar Academy was perpetrated by the Cult's pretenders acting as Shadow Garden, Nu managed to sneak in among the students and found the corpse of Glen, part of Iris Midgar's Crimson Order, and her injured ex-fiancé, Marco Granger. As Nu discovered that Granger was still alive but unconscious, she planned to silence him until she was met by Shadow, who informed Nu about the magical sealing artifact in the Academy, much to Nu's surprise. While she believed that Cid had solved the mystery of the sealing, she did not know that it was really Sherry Barnett, and Nu congratulated him while helping attain the materials he needed to investigate the problem, believing Shadow would fix it.

When Cid left, Nu threatened her ex-fiancé in a severe tone, believing he overheard the entire conversation, only to find he was still unconscious. Nu coldly told him that he is lucky, because she would not hesitate to kill him if he were to learn the identity of her master.

God Of War Tournament
When the God Of War Tournament was approaching, Cid visited Gamma at the Mitsugoshi Company executive residence for help. As Cid wanted to dress up to participate in the tournament, Nu helped Cid disguise himself under the identity of "Mundane Mann" with a slime makeup that Nu uses. With the process complete, Nu was in awe of his acting as he made himself look like a miserable weakling for the role of Mundane Mann, and helped equip him with whatever he needed to complete his look.

Great Trade Alliance Conflict
During the Trade Dispute Incident, Nu arrived to inform Gamma and Alpha, puzzled and saddened by their lord's alleged betrayal, that Gettan was the leader of the Trade Alliance and had relations with the Diabolos Cult. Nu relayed that Gettan had planned to cause the collapse of trust once the Cult's finances within the Trade Alliance was securely relocated but had yet to enact the scheme. As Alpha began to doubt Gettan was a collaborator of the Cult, this led them to conclude that Shadow already knew of Gettan's plan and did what he did wanting to destroy was something else. Immediately after, Beta arrived after having Eta's help in translating an encrypted message by Shadow. In the translation, the message informed each of them that Cid did not betray them, but rather that he was helping a partner with collecting coins through counterfeits. Between Shadow playing Gettan's plan against him and the timing of the translated message, Alpha, Beta, Gamma, and Nu were convinced Shadow deceived them to help Mitsugoshi overcome the financial crisis of counterfeit bills and protect their secret association with Shadow Garden from being made public. With this conclusion, they were relieved to know their master still cared, and Nu was also happy to relay that Delta was not dead, having arrived mid-conversation. With everything resolved, a relieved Alpha commanded the Seven Shadows present and Nu to assist in acquiring the funds Shadow secured for them to withstand the financial crisis. Afterward, Nu was among the Mitsugoshi employees who honored the bill exchanges for customers seeking their coins back.