Kirito

Biodata

Feature	Information
Name	Kirito
Original Name	Kazuto Kirigaya
Alias(es)	Black Swordsman; Kiriko
Gender	Male
Affiliation	SAO Strategy Group; Moonlit Black Cats; Wenren Trading Company; Security Bureau (game consultant)
Occupation/Role	VRMMO player; beta tester; game consultant
First Appearance	1

Power Progression

Stage / Realm / Level	Chapter	Notes
SAO beta tester	1	Had played SAO for a month before the open beta, giving him detailed knowledge of mechanics, resources, and early-game content.
SAO Floor 1 clearer	19	Landed the finishing blow on Kobold Lord Irvangu and received the special reward Night Coat.
SAO Level 48	60	Was strong enough to normally clear the 28th-floor labyrinth alone, though he sought Seiya’s help to protect the underleveled Moonlit Black Cats.
Underworld sword-skill talent awakened	813	Taught himself sword skills with a wooden sword and passed his techniques to Eugeo.
Underworld “Swordsmanship” Divine Duty	823	After training and defeating Dark Territory goblins, helped cut down the Gigas Cedar and changed his Divine Duty from Engraved Hand to Swordsmanship.
Underworld Level 47	824	Recognized that his level was far below the level 70 Dark Generals and level 100 Dark Emperor Vector.

Background / History

Kazuto gave up kendo after repeatedly being outpaced by his childhood friend Seiya, but discovered that he had exceptional talent for games. Gaming became the one field where he could regularly defeat Seiya, deepening both his enthusiasm and their competitive friendship. 1

He was selected as an SAO beta tester and ensured that Seiya obtained a NERvGear headset for the open beta. Although he wanted his friend beside him, he also hoped his beta experience would finally let him surpass Seiya in swordsmanship. 1

Kirito entered SAO using the long-standing ID “Kirito” and a deliberately more mature-looking avatar. He initially acted as Seiya’s guide, explaining basic mechanics and leading Seiya and Klein to a quiet leveling area. 4 5 6

After SAO became a death game, Kirito relied on his beta knowledge to pursue early resources and survival opportunities. He fought alongside Seiya and Asuna in the first-floor boss raid, delivering the final strike against Kobold Lord Irvangu. 11 17 19

By the time Aincrad’s front line reached the thirtieth floor, Kirito was known as the Black Swordsman. Though he generally preferred solo play, he joined the Moonlit Black Cats and concealed his true strength and level because he valued the friendship he found there. 60

In Underworld, Kirito’s real-world memories were initially sealed, allowing him to live as though he were native to that world. After Seiya and Alice were lost in the Flaint Mountain Range incident, he trained obsessively with Eugeo, discovered his sword-skill talent, and committed himself to rescuing Alice. 801 813 814

Appearance

Kirito’s real appearance is described as a youthful-faced boy. He routinely changes his in-game appearance to look more mature and rugged, often to Seiya’s amusement. 5 10 603 619

• In SAO, he used a mature, rugged avatar before the Mirror of Truth restored his youthful real appearance. 5 10
• In GGO, his rare M-9000 avatar gave him the appearance of a long-haired, dark-haired girl; he used the name Kiriko while concealing his identity. 277 285
• In Shangri-La Frontier, he created a taller avatar with a stern face and a scar. 619

Personality

Kirito is a highly competitive gamer whose desire to surpass Seiya is both a source of motivation and recurring insecurity. He is especially prone to jealousy when Seiya receives rare skills, special events, powerful equipment, or unusually rapid progression. 1 63 619 638

He begins as socially anxious and accustomed to playing alone, responding awkwardly to Klein’s friendliness. Nevertheless, he values genuine companionship deeply; his decision to join the Moonlit Black Cats and hide his strength came from his desire to belong among them. 5 6 60

Despite his insecurity, Kirito is loyal and protective. He repeatedly seeks Seiya’s assistance when others are in danger, worries about Seiya’s well-being, and chooses to preserve his bonds with Eugeo and Alice over immediately taking an overwhelmingly powerful Underworld Super Account. 60 825

Abilities & Skills

VRMMO Game Knowledge

Kirito’s SAO beta experience gives him a strong grasp of game systems, leveling routes, monster behavior, resource locations, and sword-skill mechanics. 1 4 6 11

• Guided Seiya and Klein through SAO’s basic systems and early combat. 4 6
• Identified the danger when Kobold Lord Irvangu changed weapons and attack patterns from the beta version. 18
• Recognizes practical equipment value, including the long-term usefulness of Seiya’s Wolf Heart Necklace and the Blue Rose Sword. 13 794

Swordsmanship

Kirito is an aggressive close-range fighter with exceptional reactions and adaptability in virtual environments. 8

• Used SAO skills such as Dash, Diagonal Slash, Thrust, and Vertical Chop in his duel with Seiya. 8
• Successfully fought Seiya in close-quarters combat despite Seiya’s real-world kendo expertise. 8
• In GGO, used a lightsaber and agile footwork well enough to exchange blows with Seiya. 301
• In Underworld, instinctively reproduced sword techniques including Horizontal Slash and Vertical Square Slash, then taught sword skills to Eugeo. 813
• His Dual Blades technique, Starburst Stream, is powerful but consumes substantial stamina; failure to finish the opponent leaves him vulnerable. 815

Adaptability

Kirito adjusts quickly to unfamiliar games and circumstances.

• Entered GGO to investigate the Death Gun case and maintained a female disguise to avoid losing Shino’s guidance and having to restart as a lost newcomer. 277
• Used Shino’s weapon advice to assess firearms according to avatar stat allocation. 279
• Pursued Shangri-La Frontier’s Supreme Species as a route toward proving himself as a professional gamer. 599
• Decided to pursue the Rabitts special event and Fatal Collar by deliberately courting extreme danger. 622

Equipment / Weapons / Items

• Night Coat — Special reward received for landing the final blow on the First Floor boss. 19
• M-9000 avatar — Rare GGO avatar model valued for its perceived operational advantages; gave Kirito a feminine appearance. 277
• Lightsaber — Kirito’s preferred close-combat weapon in GGO. 279 301
• Blue Rose Sword — Divine Item found in the White Dragon Cave; Kirito identified it among the treasure, but the group initially lacked the strength to carry it. 794

Relationships

• Seiya Wenren — Childhood friend, rival, and most trusted gaming partner. Kirito alternates between relying on Seiya, competing with him, and resenting his apparent luck. 1 8 60 619
• Klein — Early SAO companion whom Kirito initially finds overwhelming because of Klein’s extroverted personality. 5 6
• Asuna — Trusted teammate in the SAO Strategy Group; the two declined Diabel’s guild invitation and continued to work most closely with Seiya. 17 20 60
• Sachi — Member of the Moonlit Black Cats and Kirito’s first real crush; concerns from her parents about Kirito’s future motivate his professional-gaming ambitions. 60 599
• Moonlit Black Cats — Guild Kirito joined despite his usual preference for solo play; he concealed his actual strength to avoid alienating its members. 60
• Shino — GGO veteran who guided Kirito after mistaking his M-9000 avatar for a female newcomer. 277
• Eugeo — Underworld friend and training partner; Kirito taught him sword skills, and they worked together to rescue Alice and find Seiya. 813 823 825
• Alice — Underworld childhood friend whose capture drives Kirito’s training and plan to reach the Axiom Church. 801 813 825
• Soltilia Serlut — Second-ranked Senior Swordsman at the Imperial Sword Academy and Kirito’s superior as an Attendant Swordsman; Kirito defeated her in a sparring match. 823

Story Role / Major Arcs

Sword Art Online

• Joins SAO as a beta tester and acts as Seiya’s guide after Seiya enters as a complete VRMMO novice. 1 4
• Forms an early party with Seiya and Klein, then demonstrates SAO combat mechanics against Raging Boars. 5 6
• Duels Seiya in a fair PvP match, pitting beta knowledge and reaction speed against championship kendo. 8
• Joins Seiya and Asuna in the First Floor boss raid and lands the final blow on Kobold Lord Irvangu. 17 19
• Becomes a prominent Strategy Group fighter known as the Black Swordsman. 60
• Requests Seiya’s protection for the Moonlit Black Cats’ dangerous 28th-floor labyrinth expedition. 60

Gun Gale Online

• Independently enters GGO to aid Seiya’s Death Gun investigation. 277
• Receives the rare M-9000 avatar and is mistaken for a girl by Shino. 277
• Uses the identity “Kiriko” before Seiya identifies him from his lightsaber and poorly improvised name. 285
• Faces Seiya in close-quarters lightsaber combat during the BoB tournament. 301

Shangri-La Frontier

• Enters the game seeking a route to become a professional player and gain Sachi’s parents’ approval. 599
• Falls behind Seiya after spending time customizing his avatar and becomes frustrated by Seiya’s rapid special-event progress. 603 619
• Reaches level 18 through intense grinding, but is overwhelmed by Seiya reaching level 30 and triggering the Rabitts storyline. 619
• Pursues the Fatal Soul and Rabitts invitation by taking extreme risks, temporarily blocking Seiya’s messages in the process. 622
• Misses Seiya’s invitation to the Gravekeeper Vezavimon raid, then resolves to remain with Seiya for future unique-entity conquests. 625 638 639

Underworld

• Experiences Underworld as a native resident while his real-world memories are sealed. 801
• Trains with Eugeo after Seiya’s disappearance and Alice’s capture, discovering an innate affinity for sword skills. 813
• Forms a five-year pact with Seiya and Eugeo to rescue Alice from the Axiom Church. 814
• Enters the Imperial Sword Academy as Soltilia’s Attendant Swordsman and defeats her in a spar. 823
• Rejects the immediate power of a Super Account because accepting it would erase his identity and relationships in Underworld. 825
• Deliberately violates the Taboo Index with Eugeo to be arrested by the Axiom Church and accelerate their rescue mission. 825 826

Trivia

• “Kirito” is the game ID Kazuto has used for years and is reluctant to change between games. 4 603
• Kirito’s repeated attempts to make his avatars appear tougher and more mature are a frequent target of Seiya’s teasing. 5 603 619
• Seiya considers Kirito’s repeated guild misfortunes evidence that he possesses a “Guild-Bane Holy Body.” 60