A mace wielder that runs a blacksmith shop in Aincrad on the 48th floor. She made Asuna’s rapier “Lament Light” and one day got a request from Kirito to make him a sword with similar or better quality than his one handed long sword “Elucidator” that he got from a monster drop. She told him that if she had the right materials she could make weapons that would break any sword, so they formed a party and went on a journey to find the material she needed. Because of that journey she came to the conclusion that she felt lonely and yearned for warmth.
In ALO, she is Leprechaun race blacksmith.
She comes to realize that she loves Kirito but after finding out that the one Asuna had feelings for was in fact Kirito she decided to give up on him despite how she feels so Asuna could express her feelings, however during the moments after Kirito’s victory and SAO’s announcement that the game has been cleared she shouts at the top of her lungs that she loves Kirito and that she will meet him again in the real world, which after the ALO incident she actually does, going to school with him and Asuna.