Yu Ning

Biodata

Feature	Details
Name	Yu Ning (余宁)
Gender	Male
Affiliation	Limited Idol
Occupation/Role	Trainee; group-battle team captain
Current Ranking	26th in the first popularity ranking 35
First Appearance	Chapter 5

Background / History

Yu Ning joins Limited Idol as a gentle trainee whose online impression of Si Di is quickly overturned when Si Di treats him politely. Their shared martial-arts jokes establish an immediate friendship as they enter the filming area together 5.

He reserves Si Di an upper bunk beside a window in the crowded dormitory, then loses the spot when Lu Chen forcibly claims it. Si Di intervenes, and Yu Ning joins him in overpowering Lu Chen until he surrenders the bed 12 13.

During the theme-song mission, Yu Ning becomes determined to reach Class A alongside Si Di. Afraid of holding Si Di back, he practices through the night; Si Di finds him in the dance studio and personally corrects his timing, rhythm, and arm movements 15 18.

Yu Ning challenges Class A during the reassessment. Though his stage fright makes his voice shake, he completes the choreography accurately and remains in Class B; the mentors commend his courage and rapid improvement in dance 21 22.

In the first popularity announcement, he ranks 26th. Si Di considers the result unfairly low given Yu Ning’s vocal ability and effort 35. He later becomes a group-battle captain and practices diligently to lead his team’s first public performance 37 44.

Appearance

Yu Ning is a smaller, fair-skinned young man with a soft and harmless appearance that Si Di compares to a rabbit 5.

• Pale, nearly translucent skin 5
• Soft brown hair and moist, sparkling eyes 5
• Reaches slightly below Si Di’s eyebrows in height 5
• Temporarily dyes his hair burgundy for filming, giving his ordinarily well-behaved image a wilder look 13
• Has a slender frame and wears cute sportswear during practice 18

Personality

Yu Ning is kind, sociable, and initially conflict-averse. He is easily intimidated by aggressive people such as Lu Chen and Huo Xiao, but he still speaks up when he sees Si Di being insulted or a friend being treated unfairly 8 31.

He is hardworking but insecure, often fearing that his weaker dance skills will burden Si Di. His willingness to practice all night and challenge Class A despite the likelihood of failure shows considerable resolve beneath his soft demeanor 18 21.

As he grows closer to Si Di, Yu Ning becomes more outspoken and mischievous. He teases Si Di about romance, analyzes Huo Xiao’s behavior with confidence, and eventually jokes freely at Huo Xiao’s expense 17 31 32.

Abilities & Skills

Vocal Performance

Yu Ning is primarily a vocalist and has solid singing fundamentals.

• Completes the theme-song challenge with stable rhythm and no dance mistakes, though stage fright makes his voice tremble 22
• Is recognized by Si Di as someone who sings well and works hard 35
• His pure vocal style is poorly suited to the seductive group-battle song “FOX” 36

Dance Improvement

Dance is Yu Ning’s weaker discipline, but he improves rapidly through intense effort and Si Di’s guidance.

• Learns the entire theme-song choreography within several days despite initially performing only vocals 22
• Struggles with rhythmic pauses and controlled arm rotations before Si Di corrects his technique 18
• Practices overnight in an attempt to reach Class A 18

Leadership and Diligence

Yu Ning accepts responsibility as a group-battle captain despite doubting his own talent.

• Is selected as a captain by Si Di during team formation 37
• Repeatedly studies his team’s song and practices early to lead responsibly 44
• Encourages Si Di to rest after he spends too long teaching Class F trainees 19

Relationships

• Si Di — Closest friend and roommate. Yu Ning saves him a bunk, defends him against Lu Chen, assists in his rule-breaking phone mission, and sees him as a protective “Hero Si.” Si Di, in turn, teaches and encourages Yu Ning throughout the theme-song mission 5 12 13 18 26.
• Lu Chen — Antagonistic relationship. Lu Chen bullies Yu Ning by taking his reserved bed and mocks him for defending Si Di; Yu Ning eventually helps Si Di force Lu Chen to surrender 8 12 13.
• Huo Xiao — Starts out intimidated by Huo Xiao’s fierce public image but becomes comfortable enough to joke with him after sharing hot pot. Yu Ning recognizes Huo Xiao’s attraction to Si Di before Si Di does 31 32.
• Qin Wei — Treats him with caution and respect as the program’s producer. Yu Ning repeatedly teases Si Di about his supposed connection with Qin Wei and is interrupted by Qin Wei while explaining Huo Xiao’s feelings 17 32.
• V — Knows V only as Si Di’s secret online boyfriend. He worries that Si Di is dating an unknown person while beginning an idol career 29 30.

Story Role / Major Arcs

Early Friendship with Si Di

Yu Ning becomes Si Di’s first warm connection at Limited Idol. He sees past Si Di’s hostile reputation, offers friendship without hesitation, and develops a protective reliance on him after the conflict with Lu Chen 5 8 12 13.

Theme-Song Reassessment

Motivated by Si Di’s promise that they will reach Class A together, Yu Ning overworks himself to improve his dancing. He accepts the risk of challenging Class A, remains in Class B, and gains confidence from the mentors’ praise 15 18 21 22.

Si Di’s Confidant

Yu Ning becomes Si Di’s primary confidant regarding his online relationship with V. He accompanies Si Di on the midnight search for confiscated phones, then discovers the relationship and presses Si Di to learn more about his mysterious boyfriend 26 29 30.

Romantic Observer

Yu Ning notices Huo Xiao’s interest in Si Di and repeatedly tries to explain it to an oblivious Si Di. He also observes and comments on the tension between Si Di and Qin Wei, often escalating the situation through teasing 17 32 33.

Group-Battle Captain

After the first ranking announcement places him 26th, Yu Ning is chosen as a group captain. He approaches the upcoming public performance with diligence and a strong sense of responsibility toward his teammates 35 37 44.

Notable Quotes

“If I lose, I’ll still lose with honor!” 21

“We agreed to go to Class A together, so I can’t hold you back.” 18

Trivia

• Yu Ning has night blindness and relies on Si Di to guide him through dark hallways during their nighttime phone mission 26 28.
• He is extremely ticklish and is easily defeated when Si Di retaliates against his teasing with tickling 17.
• His fandom pairing with Si Di is jokingly called “Dead Fish CP” by livestream viewers 18.