Tiese Shtolienen

Tieze Shtolienen (ティーゼ・シュトリーネン) is Eugeo's valet who learns swordsmanship under him.

Background
She's the eldest daughter of a 6th Class Noble family who entered the Master Sword Academy with an intent to rise her family status. She's a valet because she's one of the top 12 of her year, but she states that it isn't because she is a good swordswoman, but instead that it's because the entrance exam was on a Sacred Art that she was good at.

Alicization Running
She's introduced as Eugeo's valet, who has just finished cleaning his room and is ready to be dismissed along with Ronye when Kirito enters from the window and gives them a bag with honey pies and dismiss them by telling them to share it with their roommates.

Alicization Turning
Tieze and Ronye invite their two mentors on a picnic and, while they are searching for a location to have the picnic, Tieze explains to Eugeo the difference between fifth and sixth class nobles compared to fourth class and higher nobles and the right the higher classes had to judge the lower ones.

During the picnic Tieze and Ronye request their two mentors to help another valet, who is being made to do embarrassing tasks by her mentor, Humbert Zizek.

Later, after cleaning Eugeo's room, Tieze is asked to have a seat and Eugeo explains that he had a talk with Humbert and that everything should be fine. Tieze then goes on to talk about how she was afraid to marry into an upper class noble family, because she was scared that her spouse might be someone like Humbert. She then asks Eugeo to marry her if he places high in the Four Empires Unity Tournament, since he would become an aristocrat for life if he did.

When Humbert continues abusing Frenica, she visits Humbert and Raios' bedroom with Ronye, and fall into their trap by losing their composture and disrespecting them, allowing Humbert and Raios to rape them as "punishment", though they are stopped by Eugeo and later Kirito.