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, like 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 know is that Kirito didn't choose her. Instead she was left after every other of the elite swordsmen selected theirs, because, along with Teize, they were from the lowest Noble Class.

Alicization Running
She's introduced as Kirito's valet, who just finished cleaning his room and is waiting for him to return, so she can return to her room. Eugeo offers her to talk to the teachers to change her elite-swordsman, but she declines. Kirito then enters the room through the window and gives Teiza and her a bag with honey pies and dismisses them, telling them to share it with their roommates.

Alicization Turning
She goes to a picnic with Kirito, Eugeo and Teiza near the Academy, where, while eating, they tell Kirito and Eugeo about the problem Frenica was facing because of Humbert venting his anger on her.

Since Humbert didn't stop mistreating his valet after Eugeo and Kirito's talk with him, she, along with Teiza, visit Raios and Humbert's room and ask them to stop bullying Frenica. Playing dumb, they make the two girls fall into their trap by having the girls lose their composure and disrespect the upper class nobles, allowing them to apply their authority to punish nobles from lower classes and the punishment they decided to enforce was to rape the girls.

Eugeo and Kirito save them, but break the Taboo Index in the process. The next day she brings Kirito his sword and a bento before Alice takes them to the Central Cathedral.