Ye Chen

Biodata

Power Progression

Background / History

In his previous life, Ye Chen was a shut-in who supported himself through computer skills. After arriving in another world, he inherited the identity of a young master from a prominent family whose members had been killed by demons. He feels little personal attachment to that family, but a lingering obsession from his inherited identity and the system’s missions push him toward demon hunting 15.

His knowledge of the original Demon Slayer story lets him recognize important figures and anticipate abilities or events. That knowledge is selective rather than comprehensive: he knows major secrets about Muzan and the Twelve Kizuki but still needs Tamayo’s practical explanations of demon traits and Blood Demon Arts 9 11 49.

He seeks guidance from Sakonji Urokodaki without becoming his disciple. After passing Final Selection, he joins the Corps, receives assignments through a messenger crow, and eventually establishes his base at headquarters as the Netherworld Hashira 15 37 38 49 53.

Appearance

• Teenage build: His early status panel records 165 cm and 51 kg. Later measurements reach 172 cm and 64 kg as his previously underdeveloped body catches up 3 35 81.
• Improved complexion: An early baptism leaves his face less pale and gives it more color 3.
• Early clothing: Initially wears Traveler’s Clothes, later replacing them with a Hunter’s Guild Set 3 19.
• Combat equipment: The temporary Fake-Pig Set covers him in dazzling golden armor; he later adopts a complete Xeno’jiiva armor set 25 81.

Personality

Ye Chen is irreverent, argumentative, and reluctant to accept authority merely because of rank. He rejects Tengen Uzui’s attempts to order him around and claims that anyone seeking recognition as his senior must either surpass him or offer useful backing. When provoked, he tends to retaliate verbally while keeping an outwardly calm expression 38 41 53.

He treats demon hunting as both combat and resource management, routinely referring to enemies as opportunities for exchange points and mission completion. He nevertheless becomes bored after more than a month of repetitive hunting and sometimes leaves clones to work while he eats, bathes, or rests 19 40 92.

His teasing conceals genuine concern for his allies. He challenges Shinobu’s planned self-sacrifice, protects Nezuko from execution without evidence of wrongdoing, and helps prevent Jigoro Kuwajima from taking his own life. He also lets Makomo deliver the finishing blow to the Hand Demon so she can avenge her fellow disciples 34 60 78 79 83.

He is willing to use deception, traps, and overwhelming force, but can recognize when a straightforward fight is useful. His unboosted battle with Kokushibo is a deliberate test of his own strength rather than another ambush 74.

Abilities & Skills

Monster Hunter System

The system supplies Ye Chen with knowledge, equipment, missions, lottery rewards, and upgrades purchased through exchange points 3 7 11 81.

• Exchange points: Earned by killing enemies and completing missions 3 5.
• Monster Hunter Shop: Provides weapons, armor, consumables, traps, and ammunition 5 25 29.
• System storage: Allows him to store large weapons and produce objects seemingly from his pockets 29 55 61.
• Lottery rewards: Include techniques and items from other planes, such as Moonwalk and Pokémon support items 7 52 55.
• Kill attribution: A kill counts toward his system rewards when he deals more than half the damage, even if someone else lands the finishing blow 34.
• Physique capacity: At the time of his inquiry, his body can accommodate two monster physiques. He leaves the second slot unused rather than accept a weaker Mizutsune physique 52.

Monster Physique

His Xeno’jiiva-derived physique gives him strength far beyond an ordinary human’s, later evolving through Arch-tempered Xeno’jiiva into Arch-tempered Safi’jiiva 3 35 107.

• Cuts through demon necks with sheer strength even before coating his sword in netherworld fire 3.
• Overpowers Urokodaki in direct strength contests and sends him flying with a kick 15.
• Cripples Kamunue’s shoulder with one kick 19.
• Fights Akaza hand-to-hand, including blows powerful enough to cave in his face 71.
• Lists Elder Dragon’s Pressure, Flame Burst, and Hellfire Blast among his active skills. Hellfire Blast is used to counter Akaza’s Annihilation Type 3 72.

Netherworld Fire

Ye Chen produces blue-white flames that can coat weapons or his fists. These flames absorb energy from demon blood and can interfere with regeneration 5 25 71.

• Turns his damaged sword’s previously ineffective attacks into cuts capable of severing the Oni Boss’s iron-hard hands 5 6.
• Drains Muzan’s blood energy and slows the regeneration of severed limbs 25 27.
• Spreads across the ground for a large-area attack against Doma and his Ice Crystal Dolls 69.
• Provides an answer to demons that survive decapitation: he pins Akaza down and ultimately drains him until he crumbles away 72 100.
• Supplies the absorbed energy needed to unlock his first physique evolution 35.

Netherworld Breathing

His self-created Breathing Style combines bodily enhancement with techniques adapted from Monster Hunter Hunting Arts. It begins without exclusive forms and becomes complete once he develops its first technique 7 18.

Hunting Styles

• Bushido Style: Uses a precisely angled roll to evade attacks, including area attacks, and immediately counterattack 15 18.
• Valor Style: Builds strength as combat continues and eventually activates the stronger valor state 25.
• Strong Spirit Blade Slash: A valor-only Long Sword technique that erases incoming attacks. Unlike Mirror-Flower Sword Stance, it can be repeated without limit if timed precisely 103.
• Guild Style: Used in his unboosted test against Kokushibo. During the exchange, his Long Sword progresses from white to yellow to red as its attacks grow stronger 74.

Three Body Technique and Shadow Clones

The Three Body Technique grants transformation, cloning, and substitution. The system assimilates its chakra requirements into Ye Chen’s existing abilities 7.

• Transformation: Changes his appearance into another person or an object; taking damage cancels the disguise 7.
• Substitution: Swaps him with an object just before an attack lands 7.
• Shadow Clone: An upgraded clone with a portion of his combat strength 7.
• Creates three clones, disguises them, and sends them hunting with bowguns during Final Selection 29 30 35.
• Later creates three clones to aim Light Bowguns at a gathering of disobedient demons 106.

Six Powers: Moonwalk

Moonwalk lets him kick off the air to alter his trajectory and maintain aerial movement 52.

• Enables attacks from aerial angles that ordinary jumping would not support 52.
• Lets him pursue Nakime through the Infinity Castle while cutting through platforms sent to obstruct him 94.

Crafting and Practical Knowledge

Knowledge scrolls provide hunting, cooking, and smithing expertise 3 19 81.

• Hunting knowledge: Helps him approach his first demon battles without nervousness and exploit information about enemy traits 4 11.
• Cooking: Offers meals in exchange for lodging and combat advice at Urokodaki’s home 12.
• Poison ammunition: Combines hollow ammunition with wisteria poison; later prepares 10,000 poison-filled hollow-point rounds over fifteen days 29 37.
• Weapon modification: Uses smithing knowledge to coat the Xeno’jiiva Long Sword with Nichirin-forging tamahagane 81.

Curse-Removing Hand

Ye Chen can remove the curse attached to awakened Demon Slayer Marks by touching them 106.

• Successfully treats Gyomei, Giyu, Sanemi, Obanai, Kyojuro, Muichiro, and the “Three Little Ones” 106.
• Does not apply the technique to Mitsuri or Shinobu because neither has awakened a mark 106.

Equipment / Weapons / Items

• Samurai Long Sword — His initial weapon. Its worn blade struggles against the Oni Boss until restored with a Whetstone and empowered with netherworld fire 3 5 6.
• Nichirin Blades — Corps weapons used throughout his demon battles, including a two-blade response to Enmu and Rokuro’s attacks 35 67.
• Rathalos Long Sword — A fire-element weapon purchased for 1,000 exchange points. Later modified by Tamayo with a Seastone coating that weakens Muzan on contact 25 103.
• Xeno’jiiva Long Sword — Purchased for 2,800 exchange points to complement his physique and netherworld fire; coated with tamahagane for effectiveness against demons 81.
• Hunter’s Guild Set — Purchased for 2,000 exchange points after his prolonged early hunting streak 19.
• Fake-Pig Set — Temporary golden armor with a ten-minute trial. Its holy protection negates attacks from Muzan, Kokushibo, and Doma, allowing him to abandon defense during their first major confrontation 25 26.
• Xeno’jiiva Set — Headgear, wrist guards, chest armor, belt, and leg armor purchased together for 11,500 exchange points 81.
• Yian Kut-Ku Heavy Bowguns — Buys four at 600 exchange points each for his Final Selection operation 29.
• Yian Garuga Light Bowgun — A 1,200-point weapon selected for penetration and Poison Ammo delivery; demonstrated to Shinobu by firing through a distant tree 61.
• Demon Drug and Might Seed — Stack for a 35% increase over base strength: Demon Drug adds 10% until combat ends, while Might Seed adds 25% for three minutes 25.
• Whetstone — Restores a battered blade with only a few sharpening strokes 5.
• Farseeing Potion — Locates concealed demons; used during Final Selection and to find Daki 35 42.
• Poison Knives and traps — Uses reusable poisoned knives, Paralysis Traps, and single-use Pitfall Traps to immobilize enemies 4.
• Seastone — Obtains 50 kilograms through a draw, later employing it in anti-Muzan weapon modifications 37 103.
• Antidote — Neutralizes the toxins Shinobu deliberately accumulated in her body 61.
• Support-item gifts — Gives Mystic Water to Makomo, a Light Ball to Zenitsu, and Charcoal to Tanjiro. Charcoal increases Fire-Type move power by 20% 37 55.
• Good-luck sachet — A charm from Makomo’s hometown, given before he leaves on his first Corps assignment 39.

Relationships

• Xiao Hua — Female Palico and hunting companion. Guards him while he develops his Breathing Style and helps hunt demons with traps and boomerangs 6 7 18.
• Makomo — Friend and traveling companion. He protects her during Final Selection, helps her avenge Urokodaki’s dead disciples, and gives her Mystic Water. She later promises to keep his storage secret 34 37 55.
• Sakonji Urokodaki — Adviser and sparring partner, but not his formal master. Ye Chen describes him as barely “half a master” 15 53.
• Tamayo — Research ally and source of demon knowledge. Receives his collected blood, supplies wisteria poison, and modifies his Rathalos Long Sword for the Muzan battle 11 28 29 103.
• Yushiro — Initially jealous and suspicious of him. Acknowledges the value of his information to Tamayo while still demanding that he not return 9 11.
• Tanjiro Kamado — Junior and Tsuguko. Ye Chen helps him recognize Hinokami Kagura as a Breathing Style and secures an opportunity for him to join Hashira training 54 55 80.
• Nezuko Kamado — Protected ally. Ye Chen challenges the Hashira’s presumption of guilt and proves she can resist rare human blood 78 79 80.
• Zenitsu Agatsuma — Younger ally whom he tests and teases. Also helps him stop Jigoro’s planned seppuku over Kaigaku’s transformation 50 83.
• Shinobu Kocho — Fellow Hashira and collaborator. Ye Chen defeats her in training, rejects her suicide-based revenge plan, and introduces poison-delivering firearms as an alternative 60 61 94.
• Tengen Uzui — Mission partner during the Upper Rank Six battle. Initially treats him as a rookie, then witnesses his overwhelming strength and brings him to headquarters 41 45 46.
• Kagaya Ubuyashiki — Corps leader who recognizes his contributions against Muzan and the Twelve Kizuki and appoints him as an additional Hashira 47 48.
• Redhelm — Combat companion who fights alongside his group and later carries the captured Muzan 67 106.
• Little Star — Battle ally sent to pursue Muzan and later fights beside Ye Chen against him 100 103.
• Muzan Kibutsuji — Principal enemy, habitually called “Trash Boss” by Ye Chen. Their conflict escalates from an encounter he fears to Muzan’s capture and Ye Chen’s decision to kill him 8 25 106 107.

Story Role / Major Arcs

Notable Quotes

“You can never have too many skills!” 11

“She was hurt by demons and forcibly turned into one. And then? Has she committed any other crime? Or is being hurt by demons itself her crime?” 78

“The Trash Boss is far too generous!” 92