Suguha, alias Leafa, is Kirito's younger cousin in the real world. She is a diligent worker and has been practicing Kendo for 8 years. Kirito/Kazuto calls her "Sugu". After Kazuto gets trapped in Sword Art Online, she begins playing Alfheim Online in an attempt to understand him better. She develops feelings for Kazuto after she learns that he is not really her brother, but understands that his feelings for Asuna are too strong. Coincidentally, she meets Kazuto's avatar, Kirito, in Alfheim and aids him in his search for Asuna, unaware of Kirito's true identity. After understanding the depth of Kazuto's love for Asuna, she resolves to give up on him and instead becomes attached to Kirito in ALO, but later is heartbroken when she finds out that Kazuto and Kirito are one and the same. Nevertheless, she pulls herself together and aids Kirito in rescuing Asuna.