Ronye Arabel

Ronie Arabel (ロニエ・アラベル) is Kirito's valet who learns swordsmanship under him. She along with Teiza are introduced in the Alicization Arc.

Background
She's the daughter of a 6th class Noble Family, as Teize, she entered the Academy trying to raise her family status.

She was one of the top 12 of her year, so she became a valet, what she doesn't now is that Kirito didn't chose her, instead she was left after every other of the elite swordmen selected theirs because, along with Teize, they were from the lowest Noble Class.