Suguha

Suguha Kirigaya, a character in Sword Art Online. Suguha is the cousin and adoptive sister of Kirigaya Kazuto(Kirito), but was raised along with him as his sister. In order to protect Kazuto from the wrath of their grandfather when he decided to quit kendo, Suguha became an accomplished kendo practitioner in his stead. Her name in game is Leafa.