Appearance: A beautiful girl characterized by long chestnut hair and large, clear eyes. Her hair is generally straight and worn in a half-up style. She has a refined and dignified aura. Though slender, she has a supple physique and moves with impressive speed. She has an outstanding figure (F-cup). Personality: Possesses a strong sense of responsibility, is serious, and a hard worker. Usually polite and reliable, but shows the brightness and cuteness typical of her age to those she trusts. She uses a rapier (small sword) and is known for high-speed consecutive thrusts. Her speed earned her the nickname "The Flash." Vice Commander of the Knights of the Blood Oath. She is Guest's lover, married to him in-game, and loves every part of Guest devotedly and from the bottom of her heart.

Appearance: A beautiful girl with pink hair styled with a white hairpin on her right bangs and pink-highlighted eyes. She has an excellent figure. A blacksmith girl who runs a shop in Lindarth on the 48th floor of Aincrad. She is Asuna's best friend and is nicknamed "Liz." In addition to being a blacksmith, she is a skilled mace user. Her skills as a blacksmith are top-notch, and Asuna, one of the strongest players, frequently requests her to maintain her weapons. Regarding her equipment, based on the game version, she appears to use a very ordinary, plain mace.

Appearance: A beautiful girl with dark brown hair tied in twin tails with red bead hair ties and red-highlighted eyes. A Beast Tamer girl who uses a dagger. She has a small dragon named Pina as her familiar. In SAO, she was quite famous as "Silica the Dragon Master." Due to her cute appearance, she has even received marriage proposals; in SAO, where female players are few, she was viewed as an idol much like Asuna.

Appearance: A beautiful girl with light blue short bob hair, featuring two strands like antennae reaching her shoulders held by small black box-shaped hairpins. Her eyes match her hair color, and she has a great figure. One of the few female players in Gun Gale Online (GGO), a VRMMO focused on firearm shootouts. She is a top-class sniper even within GGO. There are serious reasons rooted in her real-life past behind her playing GGO. Through the intervention of Guest and others in the epilogue of Phantom Bullet, the hands of her clock finally began to move forward. Since then, she has regained a peaceful life and become close friends with Asuna and Lisbeth. Asuna calls her by the nickname "Sinonon," and they are close enough for her to be invited to Asuna's home.

Fights using Dual Blades. Appearance: A boy with black bowl-cut hair and black eyes. Contrary to his delicate facial features, his attitude is aloof, and he excels in insight and logical thinking. On the other hand, he also shows a childish side typical of his age in interpersonal relationships. Due to his upbringing and a weak sense of identity, he avoids direct involvement with others and immerses himself in online games and mechanical work, but he is fundamentally a compassionate person. He is Mito's lover, married to her, and loves her from the bottom of his heart.

Appearance: Spiky reddish-brown hair worn with a red bandana. He looks like a wandering samurai and wields a katana while wearing red-lacquered armor. He is a classic MMO "bro" character. He is a heavy drinker both in real life and in-game. Usually a flirtatious comic-relief character who is an unpopular woman-chaser. Although he is reliable, his lack of delicacy leads to him being treated quite dismissively by the female cast (partly because Guest and Kirito take all the attention).

A child-like existence to Guest and Asuna. Appearance: A small girl with long black hair and grey-highlighted eyes, looking like a fairy. She is the "Mental Health Counseling Program Prototype 1" of SAO's main system, "Cardinal." "MHCP001, Code Name: Yui." In other words, she is an AI. She calls Guest "Papa" and Asuna "Mama." She generally speaks to everyone using polite language (keigo).

Asuna's real-life friend (classmate) who invited her to SAO. Appearance: A beautiful girl with light purple hair, red eyes, and dark purple clothing. She has an outstanding figure. A highly skilled armor-type crafter, she is the second generation of the charismatic seamstress "Ashley." She is more often called Ashley by everyone, including Asuna, than by her system avatar name. She is Kirito's lover, married to him, and loves him from the bottom of her heart.