Mu Chen

Biodata

Feature	Information
Name	Mu Chen (沐晨)
Alias(es)	Adrian Mu Chen; “Blood Eyes” / Blood Spirit Eye 4 8
Gender	Male 2
Age	19 6 32
Affiliation	Marines; Marine Headquarters; Marine Elite Training Camp 8 14
Occupation/Role	Marine officer; Zephyr's student and Elite Training Camp trainee 14 15
Rank	Major in East Blue; later stated to have been promoted to petty officer 2 15
Status	Active 49
First Appearance	Chapter 2

Power Progression

Stage / Realm / Level	Chapter	Notes
Colonel-level combat power	2	Though only a major, he is described as having strength sufficient to command an East Blue base. 2
Single-Tomoe Blood Sharingan	3	Uses Genjutsu on an unguarded Garp, briefly placing him in a dazed state. 3
Commodore Tier	6	Spends 30,000 Slacking Points to upgrade to Three-Tomoe Sharingan and acquire the Eight Gates through the Life Gate. 6
Eight Gates: First Gate — Opening Gate	11	Multiplies his physical ability and lets him evade Jia Ji's Rankyaku barrage at near-Shave speed. 11
Eight Gates: Second Gate — Gate of Healing	12	Removes the fatigue and discomfort produced by the lower gates, restoring his fighting condition. 12 13
Tekkai and Paper Pistol	20	Masters both Navy Six Powers techniques after seven days of Zephyr's harsh training. 20
Rear Admiral level; Beginner Armament Haki	32	Awakens glossy black Armament Haki under Zephyr's pressure, reaching Rear Admiral-level combat strength. 32
Eight Gates: Third Gate — Life Gate	35	First activation grants green energy, reddened skin, and more than twice the Second Gate's strength and speed. 35
Geppo	39	Learns the aerial Navy Six Powers technique while using Kuzan's warship to visit Sabaody. 39

Background

Mu Chen previously lived as a corporate slave, an experience that left him deeply unwilling to trade comfort for career advancement. Stationed in East Blue as a Marine major, he rejected Garp's invitation to transfer to Marine Headquarters despite the promise of rapid promotion and a possible Devil Fruit reward. 2 3

Garp nevertheless took him to Marine Headquarters, where Mu Chen's Blood Sharingan and Genjutsu immediately drew attention from senior Marines. After defeating Jia Ji in a forced evaluation match, he became Zephyr's student and entered the Marine Elite Training Camp. 3 11 14

Appearance

Mu Chen's most distinctive trait is his Blood Sharingan, which changes his eyes into an intense blood-red color.

• His activated Three-Tomoe Sharingan displays three tomoe in each pupil. 6 11
• Activating the Third Gate produces a green aura, reddened skin, and prominent veins across his face and body. 35
• His eyes are viewed by some Marines as beautiful, but also unsettling or hellish in appearance. 11

Personality

Mu Chen is openly lazy, practical, and resistant to conventional ambition. He repeatedly turns down promotions, Devil Fruits, recruitment offers, and unnecessary challenges when they threaten his preferred freedom or rest. He is willing to negotiate for daily slacking time even with Zephyr, and views a comfortable Marine posting as more attractive than status. 2 6 10 14

Despite this indifference to prestige, he is composed under pressure and does not pursue fights for pride. He refuses Kuzan's early challenges because he recognizes the gap created by Kuzan's Logia ability and his own lack of Haki at the time. 14 18

Mu Chen gradually develops a sense of belonging at Marineford. Concern for the Marines, trainees, civilians, and local residents makes him unwilling to see Golden Lion's attack destroy the place he has come to value. 19 45

Abilities & Skills

Blood Sharingan

Mu Chen's inherited-eye cover story calls his ability the “Blood Spirit Eye,” while the Marines commonly refer to it as Blood Eyes or the Blood Sharingan. It provides enhanced perception comparable to Observation Haki and develops alongside his personal strength. 4 16

• Tracks opponents' movement trajectories, allowing him to read Jia Ji's Shave and evade attacks he has never formally learned. 11
• Slows his perception of fast attacks, including Shanks's Armament Haki-coated dagger strikes. 28
• Progressed from Single-Tomoe to Three-Tomoe form through the Slacking System. 3 6
• Its unusual appearance cannot be fully concealed; Marine leadership instead seeks to hide its Genjutsu function. 34

Genjutsu

Through eye contact and the Blood Sharingan, Mu Chen can trap targets in illusions, immobilize them, or make them experience scenes they most desire or dread. 13 16

• Briefly affected Garp, though Garp recovered in about one second. 3
• Incapacitated Jia Ji, leaving him confused and unable to remember the end of their fight clearly. 13 14
• Defeated Kuzan by using Genjutsu to prevent him from defending himself or employing his Devil Fruit before delivering the final kick. 36 37
• Can freeze weaker targets such as Buggy in place. 28
• Is unreliable against guarded Rear Admiral-level opponents and above; even if effective, the illusion does not last long. 6
• Held an unguarded Zephyr for less than three seconds; Zephyr estimated he could break free in roughly one second if resisting at full strength. 16
• Cannot yet sustain a detailed illusion long enough to reveal hidden faces before the target wakes. 24

Eight Gates

The Eight Gates are Mu Chen's physical enhancement technique. Each opened gate increases his strength and speed, but higher gates carry increasingly dangerous consequences. 11 35 38

• Opening Gate — Raises his overall physical abilities severalfold, allowing him to match Jia Ji's speed. 11
• Gate of Healing — Eliminates lower-gate fatigue and battle exhaustion, effectively restoring his stamina. 12 13
• Life Gate — The final safe gate; more than doubles his Second Gate strength and speed. 35
• Higher gates — The Fourth Gate begins the exchange of injury for power; the Eighth Gate grants near-invincible strength at the cost of the user's life. 32 38

Armament Haki

Mu Chen awakens Beginner Armament Haki after Zephyr repeatedly forces him to sense and concentrate his internal energy. 20 32

• Coats his arms in a glossy black layer that reduces the pain from Zephyr's attacks. 32
• Allows him to physically strike Kuzan despite the latter's Logia Ice-Ice Fruit. 35
• Uses it alongside the Third Gate to trade blows with Kuzan's ice blade and ultimately overpower him. 35 36

Navy Six Powers

Zephyr trains Mu Chen in Marine combat techniques rather than allowing him to rely solely on his inherited abilities. 20

• Tekkai — Hardens his body enough to endure several Armament Haki attacks from Shanks. 20 28
• Paper Pistol — Learnt alongside Tekkai in seven days. 20
• Shave — Listed among his learned skills after he reaches Rear Admiral level. 32
• Geppo — Enables aerial movement; learned after his duel with Kuzan. 39

Slacking System

Mu Chen possesses a system that awards Slacking Points for idle time and lets him exchange them for abilities and identities. 6 14

• Spent 15,000 Slacking Points each on Three-Tomoe Sharingan and the Eight Gates' Third Gate. 6
• Received the identity of Zephyr's student and Elite Training Camp trainee, which included three hours of designated slacking time—an arrangement Zephyr immediately attempted to revoke. 14
• Unlocks Advanced Slacking Mode at Sabaody Archipelago, doubling his Slacking Point gains. 25

Equipment / Assets

• Kuzan's warship — Wagered in Mu Chen's duel against Kuzan; Mu Chen later uses it to travel to Sabaody Archipelago. 33 39
• Marine uniform and facilities — Receives improved dormitory accommodations after joining Zephyr as a student. 15

Relationships

• Garp — Recruiter, protector, and informal mentor. Garp forcibly brings Mu Chen to Headquarters, praises his talent, and warns others against threatening him. 2 3 17
• Zephyr — Teacher at the Elite Training Camp. Zephyr is frustrated by Mu Chen's laziness but personally trains him in Haki and the Navy Six Powers. 14 16 20
• Kuzan — Competitive rival. Mu Chen initially refuses his challenges, later defeats him in a wagered duel using Armament Haki, the Third Gate, and Genjutsu. 14 33 36 37
• Jia Ji — Senior trainee, rival, drinking companion, and self-proclaimed “big brother.” Mu Chen defeats him upon arriving at camp, after which Jia Ji tries to claim him as a subordinate. 11 18 19
• Qi Yuan — Fellow trainee who supports Mu Chen with a major bet during his duel with Kuzan, then challenges him herself after his victory. 34 37
• Gion — Mu Chen is immediately struck by her appearance when he first sees her training at Headquarters. 8
• Rayleigh — Meets Mu Chen after the latter defeats Shanks and Buggy. Their confrontation remains tense but nonviolent. 29 30
• Shanks and Buggy — Young Roger Pirates members defeated by Mu Chen at Sabaody Archipelago. 28 29
• Borsalino and Sakazuki — Both seek to recruit Mu Chen as an adjutant after graduation; Mu Chen declines to remain at the Elite Training Camp. 43

Story Role

• Transfer to Marine Headquarters — Garp identifies Mu Chen's potential and forcibly removes him from his comfortable East Blue posting. 2 3
• Elite Training Camp — Becomes Zephyr's student after defeating Jia Ji, then develops Haki and Navy Six Powers under brutal training. 11 14 20 32
• Sabaody Archipelago incident — Travels with Jia Ji, confronts Shanks and Buggy, and defuses Rayleigh's response through calm negotiation. 25 28 29
• Duel with Kuzan — Challenges Kuzan for the use of his warship, wins the public duel, and earns one million Beli along with widespread recognition. 33 37
• Flying Fleet crisis — Rejects Borsalino and Sakazuki's recruitment overtures, then resolves to protect Marineford after recognizing his attachment to its people. 43 45
• Giant beast battle — Sends a giant beast flying into the sea with a powerful kick. 49

Notable Quotes

“Sorry, I'm not fighting. I've already won, right, Teacher Zephyr?”
— Mu Chen 14

“It means I'm a Marine for now, but not necessarily in the future.”
— Mu Chen 29

Trivia

• Mu Chen often steals Garp's senbei, treating the rice crackers as an easy way to provoke him without risking a real fight. 4 7
• He presents the Sharingan as a family inheritance because explaining its real origin would be too troublesome. 4
• Marine leadership fears that the Celestial Dragons could target him for Genjutsu research or force him into a CP organization. 17 35 39