Yun Lan

Biodata

Feature	Details
Name	Yun Lan (云岚)
Alias(es)	“Great Demon King”; Young Master; Young Patriarch; Brother Lan
Species/Race	Human; transmigrator
Gender	Male
Affiliation	Yun Family; First-Year Class B; Student Council; Yungui Mountain Sect
Occupation/Role	Student; Yun Family young patriarch; cultivator; Student Council member
Status	Active
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Peak Kiyotaka Ayanokoji Template — completed	1	His system loaded the template before entering dormancy; Yun Lan spent roughly a decade refining it to completion.
Yungui Mountain cultivation — improved	41	Trained daily through stances, sword practice, breathing exercises, meditation, and mental-cultivation methods; no formal realm is named.

Background / History

Yun Lan is a transmigrator and the cherished heir of the Yun Family. After completing the family’s trials, he was recognized as its young patriarch. His dormant system granted him the peak template of Kiyotaka Ayanokoji, which he refined over a decade before enrolling at Advanced Nurturing High School. 1

At his father Yun Shen’s request, Yun Lan agreed to attend Advanced Nurturing High School in Japan as a favor to Chairman Sakayanagi. His parents also intended for him to assist the financially troubled Yukinoshita family, whose eldest daughter, Yukino, had been arranged as his fiancée. 1

Before his school life, Yun Lan rescued the freezing sisters Yi Jiang and Yi Xuan from the street during winter, brought them to the Yun Family villa, and ensured they received food, clothing, shelter, schooling, and protection. Although his mother later made them his personal maids through a contract, Yun Lan repeatedly insisted that they were people rather than objects and promised not to abandon them. 35 40

He later returned to Yungui Mountain for cultivation, remaining in contact with the sisters and visiting them weekly. When they chose to become disciples, he attempted to return their deed and give them freedom, but Yi Jiang rejected the offer and insisted on staying by his side. 41 42

During a later trip, Yun Lan met the isolated Xiren orphan Ye Shunguang. He took her in, encouraged her to attend school and make friends, then brought her to Yungui Mountain. Her request to become his disciple—and a concealed marriage contract in her petition—intensified the emotional conflict between Yun Lan and his three junior sisters. 43 44 46

Personality

Yun Lan is composed, observant, and highly deliberate. He habitually assesses people, hidden rules, and the consequences of revealing his abilities before deciding how to act. Even when confronting Chie Hoshinomiya or Manabu Horikita, he maintains a calm, measured demeanor. 5 21

Despite his analytical nature, he explicitly values emotion over pure efficiency. His decisions repeatedly center on protecting people he cares about, including Honami Ichinose, his classmates, and the three girls from his past. 21 31 49

He prefers to avoid direct emotional confrontation when uncertain, particularly regarding the increasingly possessive affection of Yi Jiang, Yi Xuan, and Ye Shunguang. However, he does not dismiss their feelings lightly and struggles to balance their attachments with his own responsibilities. 45 47

• Displays kindness without seeking recognition, such as giving his bus seat to an elderly woman and rescuing Yi Jiang and Yi Xuan. 2 35
• Can present a polite, gentle social persona while privately remaining detached and analytical. 12 32
• Teases Honami affectionately and indulges her small attempts to claim his attention. 7 10
• Is capable of deliberately suppressing visible excitement and returning to an unreadable calm state. 28

Abilities & Skills

Kiyotaka Ayanokoji Template

Yun Lan possesses a completed peak template of Kiyotaka Ayanokoji, acquired through his system and refined over a decade. The system is dormant by the time he begins school. 1

• Reads social setups and concealed motives, including Honami’s staged cafeteria encounter and Kiyona’s calculated approach. 7 12
• Rapidly identifies power structures and hidden incentives within the academy’s point system. 5 14
• Maintains composure while under scrutiny from figures such as Manabu Horikita. 4 21
• The system provides no documented active guidance after its dormancy. 1

Strategy and Point Management

Yun Lan treats private points as both resources and leverage. He uses his abilities to build influence while avoiding the resentment that would come from completely ruining opponents. 7 11

• Won 8 million personal points by challenging upperclassmen in Chess, Chinese Chess, Go, and Kyudo. 7
• Used confidentiality contracts to prevent the early spread of information about his club victories. 7
• Continued challenging clubs—including Kendo, Karate, Judo, Shogi, Tea Ceremony, and Poetry Appreciation—to expand his point reserves and reputation. 11
• Intentionally leaves opponents “a line of retreat,” viewing future connections as more valuable than creating permanent enemies. 11
• Used the prospect of points and upperclassmen to plan a means of removing Chie Hoshinomiya without allowing her to manipulate him or Honami. 5

Combat and Martial Arts

Yun Lan has extensive practical martial ability, reinforced by sword cultivation at Yungui Mountain. 10 41

• Defeated Kendo Club members, its vice president, and president Sato in succession. 10
• Earned Sato’s acknowledgement of his “absolute strength, absolute analysis, and absolute victory.” 11
• Defeated members of the Karate, Kyudo, and Judo clubs. 11
• Practices sword forms, stances, breathing exercises, meditation, and mental-cultivation methods. 41

Swimming

Yun Lan possesses exceptional competitive swimming ability despite not joining the Swimming Club. 30 31

• Won his 100-meter freestyle heat by a substantial margin. 30
• Recorded a manually timed 50 seconds in the 100-meter freestyle and won the boys’ group competition. 31
• Earned 5,000 private points for first place. 31
• Declined the Swimming Club instructor’s recruitment attempt, citing his Student Council membership. 31

Leadership and Class Awareness

Yun Lan recognizes that Class B’s apparent freedom may conceal rules and penalties. He subtly encourages his classmates to maintain disciplined student behavior and recruits Kanzaki as a rational counterbalance to Honami’s idealism. 14 15

• Warned the class against lateness, early departures, and absences without openly exposing the school’s hidden mechanics. 14
• Sees Kanzaki as a logical and influential figure among the boys. 15
• Wants to protect Honami’s refusal to abandon classmates, even when he considers her outlook naive. 31

Relationships

• Honami Ichinose — Childhood friend and Class B classmate. Yun Lan accepts her confession and considers her irreplaceable, though he does not promise exclusive love. 25 26
• Yukino Yukinoshita — Arranged fiancée. Yun Lan rejects the engagement because he has feelings for Honami, while Yukino still proposes that they attempt to get along for her family’s sake. 8 9
• Ryuji Kanzaki — Classmate, desk-mate, and strategic confidant. Yun Lan trusts Kanzaki’s analysis enough to call him his “beloved friend,” “brother,” and “kin.” 16 27
• Manabu Horikita — Student Council president who recognizes Yun Lan as an unusual variable and accepts him into the Student Council after testing his values. 19 22
• Chie Hoshinomiya — Class B homeroom teacher. Yun Lan opposes her attempts to use him and Honami in her conflict with Sae Chabashira. 5
• Ayanokoji Kiyona — A fellow first-year whose calculated friendliness Yun Lan recognizes and cautiously reciprocates. 2 12
• Yi Jiang — One of Yun Lan’s former personal maids and junior sisters. He rescued her and her sister, but her gratitude develops into intense attachment and possessiveness. 35 42 45
• Yi Xuan — Yi Jiang’s younger sister, whom Yun Lan rescued and later trained alongside her sister at Yungui Mountain. 35 42 43
• Ye Shunguang — Yun Lan’s youngest junior sister. He took her in from an orphanage; she later sought to become his disciple while concealing a marriage contract in her application. 43 46
• Yun Shen and Xia Yue — Yun Lan’s parents. Both support him strongly, though Xia Yue frequently interferes in his relationships and disclosed his Japanese location to his three junior sisters. 1 49
• Faust / Mao Rabbit — A member of the Twelve Black Beasts whom Yun Lan trusts with logistics, intelligence, and protection arrangements for the girls. 38 49

Story Role / Major Arcs

Enrollment at Advanced Nurturing High School

Yun Lan enters First-Year Class B at Sakayanagi’s request. He meets Ayanokoji Kiyona on the bus, reunites with Honami, and becomes known to Chairman Sakayanagi, Chie Hoshinomiya, and Manabu Horikita as the Yun Family heir. 2 4

Club Sweep and “Great Demon King”

Using challenges against upperclassmen, Yun Lan accumulates millions of private points across academic, athletic, and cultural clubs. His broad string of victories earns him the campus nickname “Great Demon King.” 7 10 11

Student Council Entry

Manabu Horikita invites Yun Lan for a talent assessment. During their interview, Yun Lan argues that ability is necessary to protect those he values and openly states that emotions matter more to him than efficiency. Manabu accepts him into the Student Council. 19 21 22

Honami’s Confession

Honami presses Yun Lan to be honest about their bond. He admits that she occupies a unique place in his heart, and he silently accepts her declaration that she will remain with him for life. 25 26

The Return of the Junior Sisters

Memories of Yi Jiang, Yi Xuan, and Ye Shunguang reveal Yun Lan’s unresolved past with Yungui Mountain. When he learns the three have discovered his location and may be traveling to Japan, he orders the Five Fingers organization to protect them and begins preparing for the disruption their arrival may cause. 34 48 49 50

Notable Quotes

“First of all, in this school, I am Yun Lan of Class 1-B. Only then am I a member of the ‘Yun Family’ as you know it.” 5

“Do not use me and Honami as tools for your revenge, Chie Hoshinomiya!” 5

“I simply want to protect those I wish to protect.” 21

“Leave a line of retreat for others, so you may meet again in the future.” 11

Trivia

• Yun Lan is a light sleeper and normally wakes around 6:30 AM through long-established self-discipline. 10
• He gave up his seat for an elderly woman partly because he did not want to attract attention. 2
• His swimming performance made the instructor consider him an exceptional competitive prospect. 31
• He calls Yi Jiang and Yi Xuan “white fluff-balls” in his internal thoughts. 42
• His mother Xia Yue supports a prospective marriage system permitting polygamy and encourages him to pursue multiple relationships. 9