Ais

Biodata

Feature	Value
Name	Ais Wallenstein (艾丝)
Alias(es)	Sword Princess
Gender	Female
Affiliation	Loki Familia
Occupation/Role	First-class adventurer; swordswoman
Status	Active
First Appearance	Chapter 10

Power Progression

Stage / Realm / Level	Chapter	Notes
Level 5	46	Her self-restriction training substantially improved her Status: Strength B785, Endurance B747, Dexterity S925, Agility S922, and Magic Power S987. She had enough accumulated ability to consider leveling up, but was uncertain whether to advance immediately or continue raising her base stats. 46
Level 6	62–63	Achieved a Great Deed by defeating the 37th-floor Floor Master, Udaios, after a two-hour battle. Riveria provided defensive magic and Shirou supplied ranged support, but Ais led the fight herself. 61 62 63

Appearance

Ais is a golden-haired, golden-eyed swordswoman whose usually expressionless demeanor contrasts with her intense combat presence. 58 182

• Fights primarily with a longsword, notably the Despair Sword. 16 41
• Her body and weapon can be enveloped in wind through Gale Dash. 41
• Is recognized throughout Orario as the Sword Princess, admired for both strength and beauty. 34

Personality

Ais is intensely focused on combat and becoming stronger; when asked whether she missed returning to Orario after an expedition, she answered that she wanted to keep fighting. 10 Her pursuit of strength is tied to deeply personal questions surrounding her mother, Aria, and her encounters with the red-haired woman Ravis. 58 60 61

Though she often speaks in a flat, reserved manner, Ais is not emotionless. She can become embarrassed, anxious, and visibly moved by her companions' support. 45 61 92 She places considerable trust in Shirou Emiya, seeks his guidance, and calls him “Brother” or “Onii-chan.” 20 33

Abilities & Skills

Gale Dash

Ais's wind magic wraps her body and weapon in a gale, increasing her mobility and offensive power. 41

• Allows her to accelerate into rapid assaults and move with exceptional agility. 41 51
• Can be used to launch the long-range wind attack Micro Gale. 51
• At full power, turns her into a storm-like force capable of rapidly cutting through monster hordes. 108
• Ais considers it dangerous to use against people because of its power, though she will use it when necessary. 58

Princess of Vengeance

Ais's Skill greatly strengthens her attacks against monsters. 38 58

• Its effect rises with her hatred toward the target. 58
• Grants an especially extreme increase in power against Dragon Kind. 38 58
• Lets her contend with opponents above her nominal level when fighting monsters. 38 58
• Does not provide the same advantage in combat against humans. 58

Swordsmanship

Ais is an elite close-range combatant whose primary battlefield has been the Dungeon. 58

• Wields her sword with sufficient precision and speed to serve as one of Loki Familia's foremost vanguards. 41 108
• Her swordsmanship is optimized for slaying monsters rather than fighting people, leaving her at a disadvantage against experienced human combatants such as Ravis. 58 59
• Trained under Shirou in Hundred Head Slayer, seeking to further improve her technique. 33 34
• Uses self-imposed restrictions during training to increase danger and accelerate the growth of her Divine Blessing. 21 46

Equipment

• Despair Sword — Ais's signature sword, forged by the Goberniu Familia. 16
• Scabbard — Used as part of her close-quarters training bouts with Bell Cranel. 87

Relationships

• Shirou Emiya — Ais calls Shirou “Brother” and relies on his guidance in both training and dangerous missions. He advised her self-restriction method, taught her Hundred Head Slayer, and supported her battle against Udaios. 20 21 33 61 62
• Lefia Armon — Fellow member of Loki Familia and Shirou's other “sister.” Ais gently praises Lefia's progress and shares a close bond with her. 19 34 64
• Riveria Ljos Alf — Mentor figure who worries over Ais's growth and safety. Riveria protected Ais with defensive magic during the Udaios battle. 10 61
• Finn Deimne — Loki Familia's captain. Finn supports Ais's desire to grow while setting safeguards for her solo challenge against Udaios. 61
• Tiona Hiryute and Tione Hiryute — Close companions who train, travel, and fight alongside Ais. 10 18 41
• Bell Cranel — Ais trains Bell in swordsmanship alongside Shirou; Bell openly admires her. 63 67 87
• Ravis — Red-haired adversary who mistakes Ais for Aria and attempts to capture her. Their encounters intensify Ais's determination to become stronger and learn the truth about her mother. 58 60 75

Story Role / Major Arcs

First Contact with Shirou

During a Loki Familia expedition, Ais witnesses Shirou's combat ability in the Dungeon and becomes interested in him. After learning he belongs to the Familia, she later approaches him privately to ask how she can become stronger. 11 12 20

Self-Restriction Training

Shirou advises Ais to increase the danger of her training by imposing restrictions on herself rather than relying only on deeper Dungeon floors. The method significantly improves her Level 5 Status and gives her a new direction for growth. 21 24 46

Ravis and the Name “Aria”

Ais is repeatedly confronted by Ravis, who calls her “Aria” and seeks to take her away. Ais reveals that Aria is her mother, making the encounters central to her determination to uncover her past. 58 60 61 75

Solo Subjugation of Udaios

Seeking a Great Deed and a path to Level 6, Ais challenges Udaios, the Lone King of the Labyrinth. With her Familia safeguarding the battle's perimeter, she defeats the Floor Master after two hours and becomes a Level 6 adventurer. 61 62 63

Deep-Floor Expeditions

As a Level 6, Ais becomes one of Loki Familia's indispensable combatants during expeditions and missions involving the Dark Faction, Ravis, and the Dungeon's altered lower floors. 73 75 79 97

Battle Against the Fallen Elf

The Fallen Elf singles Ais out as “Aria” and attempts to devour her. Ais helps break through the monster horde, using Gale Dash at full power to prevent enemies from interrupting Shirou and Riveria's decisive magic. 103 107 108

Notable Quotes

“No, I still want to keep fighting!” 10

“I'm not Aria, Aria is my mother!” 75

“I will definitely defeat Udaios!” 61