Asuna Yuuki

Asuna Yuki (voiced by Cherami Leigh) is a rapier warrior and the main love interest and other main protagonist of Sword Art Online.

Pre Adventures
Asuna was once a very young girl who went to an all girls school, until entering SAO with her brother's nervegear and getting trapped. She eventually became a skilled swordswoman and earned her the title "The Lightning Flash". This happened when she met Kirito, a player who was also trapped in the game. The two would spend time and eventually fall in love with each other, becoming a couple.

Adventure series
Asuna was once a very well loved and respected girl, but wasn't happy with her family, they tried to have suitor' for to marry but she didn't seemed interested. Then everything changed when the Heartless attacked, she managed to escape with a friend of her parents, a man called Heathcliff, but she was in a state of sadness because her family was gone. Asuna then decided to gain resolve and became a apprentice swordswoman to Heathcliff, eventually ecoming The Lightning Flash, a skilled rapier master, and a daughter to Heathcliff. Then everything changed once more, this time it was a good change, because that was when she heard rumors of a duel wielding black swordsman wondering around, and upon Heathcliff's instructions, she went to find the warrior. The warrior was revealed to be none other than, Kirito. The skill he had soon caused a huge ruckus back in her home village when he arrived after defeating a giant Heartless called Guard Armor. The two warmed up to each other, mostly Kirito, and eventually became good friends. When the two were traveling, armed for anything, together in a forest, the two were soon attacked be a giant Heartless, revealed as Darkside, and attacked. Asuna swiftly fought the heartless only to be snatched up by The giant, as she fought to free herself, she soon realized that it was the same one that took her parents away, and suddenly got scared for her life and began crying. However that was suddenly resolved when she saw Kirito wielding his two swords and attacked, revealing this was the same one that took his family as well, unleashing a powerful attack that freed her and slayed the giant. Asuna soon saw her parents images next to Kirito's as they ascended into Paradiso, but soon saw Kirito hard as a rock, she tried to apologize for what happened and figure she should just stay away from him, but was grabbed by him, and brought towards him and was hugged, she returned the hug. The two confessed their feelings of love fro each other, and asked Heathcliff if they could marry, which he agreed. The two were wed, and eventually have a daughter, Yui.

Trivia

 * Asuna will appear in the near future.