ν-No.13-

Hobbies: Thinking about Ragna
Values: Ragna
Likes: Ragna
Dislikes: Everything else

ν-No.13- is a Murakumo Unit who was sealed in the Sheol Gate. She is a playable character in Calamity Trigger, Chronophantasma and Central Fiction. She appears in Continuum Shift as Λ-No.11-'s Unlimited form. She was programmed to terminate anyone she deems as hostile subjects that came near the Gate. ν-No.13- is also shown to have a split personality, split between an emotionless girl when around others, and a yandere when around Ragna the Bloodedge, though this may be how she was programmed to act. ν-No.13- wants to absorb Ragna and have him join her in destroying the world, because she, too, possesses a piece of the Azure Grimoire. When Ragna refuses to join her, she decides to take him by force.

Being a prime field device, Nu's emotions were sealed away, becoming little more than an emotionless machine who kills anyone that obstructs her programming or whom she determines to be hostile. When around Ragna the Bloodedge, however, her personality changes to that of a yandere who is absolutely infatuated with him. In her mind, Nu must have Ragna to herself, and anyone who gets in the way of her love must die. At heart, however, Nu is a sad and lonely girl who has endured years of nightmarish torture, clinging to her memories of Ragna to give her hope. It is for this reason that she hates humans, and wants to merge with Ragna to form the Black Beast.