Kirigaya Suguha

Kirigaya Suguha (also known as Leafa in the game) is Kirito's (Kazuto's) cousin and adoptive younger sister in the Sword Art Online anime.

In real life, she has short black hair, dark grey eyes, and a cute, somewhat childish facial appearance. She's athletic and physically strong due to years of practicing kendo (often appearing in her red tracksuit), with a notably curvaceous figure (emphasized in the anime).

Personality-wise, Suguha is upbeat, outgoing, cheerful, and much more social than the introverted Kazuto. She's confident, energetic, kind-hearted, and supportive, though she can get embarrassed easily (especially around her brother/cousin) and has moments of emotional vulnerability.

In the ALfheim Online arc (Fairy Dance), she plays as Leafa, a Sylph warrior with long blonde hair, bright green eyes, pointed ears, and green/white attire. She's skilled in swordsmanship (transferring her kendo experience), known for being one of the fastest flyers, and helps Kirito navigate the game world.

Her story explores family bonds, complicated feelings after learning she's not biologically related to Kazuto, and her growth in the virtual world.