Suguha Kirigaya is a character from the anime series Sword Art Online. She is the cousin and adoptive sister of the protagonist, Kazuto Kirigaya, also known as Kirito. Suguha is an avid kendo practitioner and has a strong, independent personality. She initially becomes involved in the virtual world through ALfheim Online, where she plays as Leafa. Throughout the series, she provides emotional support for Kirito and helps him navigate the complexities of the virtual realms. Her character explores themes of family, identity, and personal growth.