Xu Nuo

Biodata

Feature	Information
Name	Xu Nuo (许诺)
Alias(es)	Ultimate Phantom Thief; Nameless Guest; Chu Ying; “Human Metronome”; Legendary Nine-Crown King; Go Saint 4 26
Gender	Male
Affiliation	Class D, Advanced Nurturing High School 1
Occupation/Role	Student; Phantom Thief; hacker
Status	Active
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Ultimate Phantom Thief	2	Declares the identity before Class D, gaining a seven-day suite of Phantom Thief abilities.
School-wide Private Point heist	21	Steals and stores 470 million Private Points on a USB drive after evading the Student Council’s server-room ambush.
Permanent voice mimicry	37	After the Phantom Thief ability expires, voice mimicry remains permanently solidified.
Dozens of solidified skills	37	Reveals that repeatedly used weekly abilities—including writing, piano, and Go—have permanently remained with him.

Background

Xu Nuo is a transmigrator who lived in the world for eighteen years before realizing, upon receiving his acceptance letter, that he had entered Classroom of the Elite. His knowledge of the original story is incomplete: he remembers only select major events, names, and nicknames. 1

His supernatural “Weekly Superpower” activates when he publicly declares himself the “Ultimate” of a field before more than ten people. The resulting ability lasts seven days, though parts of frequently used abilities can eventually become permanent. 2 37

Before enrolling, Xu Nuo built a public reputation in several fields. Sakayanagi Arisu identifies him as a mechanically precise pianist called the “Human Metronome,” an award-winning anonymous novelist, and the undefeated online Go player “Chu Ying,” who defeated world champions nine times. 4

Appearance

Xu Nuo is an exceptionally handsome young man whose appearance draws persistent attention from classmates, particularly the girls of Class D. 1

• Fair skin described as almost cold. 1
• Deep-set features, a high nose bridge, and well-shaped lips. 1
• Pitch-black eyes noted for their unusually intense, captivating quality. 1
• Usually carries himself with an indifferent, composed expression. 1 2

Personality

Xu Nuo is calm, self-assured, and difficult to provoke. He routinely treats suspicion, hostility, and social attention with indifference, whether facing Horikita Suzune’s sharp remarks, Sakayanagi Arisu’s investigation, or Sae Chabashira’s attempts to pressure him. 1 4 10 47

He views phantom thievery as performance art rather than simple theft. He disdains petty, inconspicuous methods, preferring elaborate operations, advance notice letters, disguises, and a dramatic escape. 6 12 21

Despite this theatricality, he is highly pragmatic. He negotiates aggressively with the school administration, exploits leverage against Horikita Manabu and Sae Chabashira, and refuses to prioritize Class D’s advancement when it does not serve his own interests. 26 36 47 48

Xu Nuo can also be unexpectedly patient and protective. He agrees to mentor Kamuro Masumi after she honestly admits Sakayanagi’s orders, and he intervenes when Airi Sakura is harassed by a repair-shop clerk. 31 42 44

Abilities & Skills

Weekly Superpower

Xu Nuo gains an “Ultimate” ability by declaring an identity before more than ten people. Each acquired ability normally lasts seven days, but prolonged or repeated use can leave permanent skills behind. 2 37

• Has accumulated dozens of abilities, major and minor. 37
• Previously used Ultimate Hacker abilities, including invisible hands. 2
• His solidified skills include writing, piano, Go, and voice mimicry. 37
• The scope of a declared identity is conceptual and may expand into related skills over time. 37

Phantom Thief Techniques

As the Ultimate Phantom Thief, Xu Nuo possesses a broad set of infiltration and escape capabilities. 6

• Disguise — Can convincingly imitate another person’s appearance, physique, demeanor, and presence; he successfully impersonates Horikita Manabu. 11 12
• Voice mimicry — Can reproduce voices; this skill becomes permanently retained after the Phantom Thief ability ends. 37
• Sleight of hand — Makes Kamuro’s stolen beer can vanish after manipulating it like a coin. 5
• Lockpicking and observation — Possesses top-tier lockpicking ability and strong awareness of surroundings. 5 6
• Acrobatics and parkour — Can perform acrobatic movement and parkour; the Phantom Thief skill set also includes hang-glider piloting. 6
• Planning and infiltration — Locates the school’s server infrastructure, delivers a notice letter, bypasses security, and completes a school-wide theft. 6 12 21

Hacking & Network Security

Under the alias Nameless Guest, Xu Nuo is recognized as a hacker capable of breaching the school’s firewall. 26

• Negotiates an 80 million Private Point payment to build the school’s network firewall. 26
• Upgrades the school network’s firewall after receiving payment. 32
• Can communicate with an outside group despite the school’s closed-campus restrictions. 37

Combat

Xu Nuo has some combat-related abilities and is willing to employ force when he considers it necessary. 44

• Brutally attacks the repair-shop clerk who harassed Airi Sakura and warns him to leave the school. 44
• Uses disguises and voice modulation to keep his violent actions untraceable. 44
• Carries a Poker Card Launcher capable of embedding cards at least two centimeters into a wall. 35

Equipment

• Poker Card Launcher — Launches playing cards with enough force to injure or deter opponents. 35
• Playing cards — Used as a Phantom Thief calling card and as ammunition for the launcher. 21 35
• USB drive — Holds the 470 million Private Points stolen during his first major heist. 21
• Disguise materials — Used to alter his face, height, clothing, and presentation while impersonating others. 11 12

Relationships

• Horikita Suzune — His Class D seatmate. Their relationship begins with mutual irritation, but Xu Nuo repeatedly assists and teases her; she becomes increasingly curious about him. 1 3 20 36
• Karuizawa Kei — Childhood neighbor and childhood sweetheart. Xu Nuo remembers her as “Little Crybaby”; she later confesses to him through Line. 8 10 16
• Sakayanagi Arisu — A self-proclaimed rival fascinated by his numerous identities and talents. Their exchanges are competitive and teasing, with Sakayanagi suspecting him as the Phantom Thief. 4 30
• Kamuro Masumi — Initially catches her shoplifting and judges her technique harshly. He later becomes her mentor in Phantom Thief techniques in exchange for daily breakfast. 5 31 32
• Sae Chabashira — His homeroom teacher and occasional negotiator. She lends him 500,000 points, later seeks his help for Class D, and repeatedly fails to pressure him through authority alone. 11 47 48
• Horikita Manabu — Xu Nuo impersonates him to gather server-room intelligence, then later negotiates two Student Council positions from him through blackmail. 12 36
• Sakayanagi Narimori — The school chairman. He knows Xu Nuo’s Phantom Thief activities and hacker alias; Xu Nuo jokingly calls him “father-in-law.” 25 26
• Airi Sakura — Xu Nuo helps repair her camera and protects her from a lecherous clerk, causing her to become increasingly attached to him. 39 42 44
• Kushida Kikyo — Sees through her attempt to secure his help through emotional manipulation and agrees to assist only in return for a favor. 17
• Ayanokoji Kiyotaka — Their first direct conversation ends with Ayanokoji expressing interest in working together. 32

Story Role / Major Arcs

Class D Introduction

Xu Nuo enters Class D as Horikita Suzune’s seatmate. He publicly declares himself the “Ultimate Phantom Thief,” produces a rose from thin air, and gives it to Suzune, immediately establishing his mysterious reputation. 1 2

Private Point Heist

Seeking more money, Xu Nuo rejects petty theft in favor of stealing the school’s entire Private Point system. He impersonates Horikita Manabu to investigate the server room, sends a Phantom Thief notice letter, and successfully steals 470 million points. 6 12 21

Negotiation with the Chairman

After the heist, Xu Nuo meets Chairman Sakayanagi. Rather than facing punishment, he leverages his hacker identity to negotiate an 80 million-point contract for strengthening the school firewall. 25 26 32

Mentoring Kamuro Masumi

Kamuro asks Xu Nuo to teach her the sleight-of-hand technique he displayed in the supermarket. Once she admits that Sakayanagi ordered her to monitor him, he accepts her as a student and begins teaching her Phantom Thief skills. 31 32 37

Class D Power Struggles

Xu Nuo repeatedly declines to support Class D solely for its collective benefit. He refuses Sae Chabashira’s request to save Sudo Ken and uses her ambition to gain leverage over her. 47 48 49

Trivia

• Xu Nuo calls his ability system “Weekly Superpower.” 2
• He considers a Phantom Thief’s notice letter an essential part of the performance. 12
• His admission file lists mediocre ratings in academics, intelligence, judgment, and physical ability, with an E in teamwork; Sae Chabashira suspects this profile is an act. 10
• He is ranked first in the school forum’s “Handsome Guy Ranking.” 16