Daina

Biodata

Feature	Value
Name	Daina (戴娜)
Alias(es)	Steel Fist Daina; Steel Fist Iron Mask; Iron Mask Woman
Gender	Female
Affiliation	Ace's disciple; Enchanting Wizard Apprentices; High Tower territory
Occupation/Role	Wizard; magic researcher; demon hunter; leader of wizard apprentices
First Appearance	11

Power Progression

Stage / Realm / Level	Chapter	Notes
Wizard apprentice	55 56	Established a blood-and-mental-power contract with the Iron Masked Fire Fist; received a six-page magic book and silver forehead patterns.
Mental Power 1	57	Reached the threshold to cast spells after training with the Five-Step Meditation Method.
Minimalist Meditation Method	58	Independently optimized and formed the secondary magic power rune; began magical corruption and gained improved physical and mental attributes.
Mental Power 2	61	Reached this level after two further days of meditation; magical corruption progress was recorded at 20%.
Near-complete magical corruption	66	Recorded attributes included Strength 1, Agility 1.1, Spirit 4.2, and Magic Power 12.6; demonic corruption progress reached 90%.
Hero-like combat output	108 145	Combined Electric Tremor Activation, Daina Steel Fist Style, Local Reinforcement, and magic-crystal armaments to temporarily match hero-like opponents.
Second-ring wizard	365	Her innate magic evolved into the Simulated Projection spell.

Background

Daina first worked at the city-state public library after passing its literacy test. She was an aspiring female scholar, distinguished by her eagerness for learning and interest in mathematics. There, she met Ace while assisting with book collection and classification. 11

Over the following months, Ace taught her mathematics and evaluated her suitability for magic. He considered her persistent, intellectually curious, socially uncomplicated, and unusually receptive to new ideas. 51 53

Ace, disguised as the Iron Masked Fire Fist, forcibly initiated Daina into the supernatural through a contract. Despite the fear and pain of the ritual, she accepted the path of wizardry and began studying the magic book he gave her. 55 56

After proving both initiative and poor strategic judgment during her attempt to earn exchange points at a demon hunter camp, Daina learned that Ace was the masked fire-lighter. She accepted his offer of formal discipleship and traveled with him toward the Northern Territory. 61 62 67

Appearance

Daina is described as a delicate young woman with fluffy flaxen or linen-colored hair, clear eyes, and shapely calves. Following youth restoration and eternal beauty, her appearance again resembled the girl Ace first met, despite the hardships she had endured. 11 291

• Fluffy flaxen/linen-colored hair. 11 291
• Delicate facial features and a youthful appearance. 11
• Originally wore somewhat worn but clean clothing and a white literacy badge marked “Excellent.” 11
• Uses an iron mask while leading wizard apprentices in hiding. 108 143
• Carries a pendant containing a dormant infant with a soul secret space. 376

Personality

Daina is studious, persistent, and intensely curious. Her early ambition was to become a scholar; exposure to magic redirected that same drive into experimentation, spell development, and combat training. 11 53 70

She has a strong independent streak. Rather than merely following the magic book's recommended solution, she devised her own mathematical solution for the Minimalist Meditation Method, impressing Ace with her confidence, rebellion against authority, and pioneering temperament. 58

Her courage can become recklessness. She entered the demon hunter camp with inadequate preparation and was nearly trafficked, a mistake that Ace later used to teach her the value of strategy. 61 62 67

Daina is deeply loyal to Ace and protective of her fellow apprentices. The Legion's persecution transformed her from an ordinary city-state citizen into a guerrilla leader; she later took responsibility for the apprentices' choices and the High Tower territory's defense. 108 141 329 Her feelings for Ace deepen into affection, possessiveness, and a willingness to sacrifice herself for him in one possible future. 160 337 365

Abilities & Skills

Wizardry and Magic Book

Daina's contracted magic book serves as her magical archive, status monitor, ritual interface, and communications tool.

• Contains Ritual, Control and Retrieval, Rune Tome, Spellbook, Magic Diary, and Information Transmission pages. 56
• Can transform into nail polish worn on her index finger. 56
• Records her attributes, magical corruption, runes, spells, research notes, and discoveries. 56 58 66
• Operates under equivalent exchange: she may obtain knowledge by contributing demonic beasts, materials, discoveries, or runes. 61

Meditation and Physical Enhancement

Daina uses the Minimalist Meditation Method to cultivate mental power, magic power, and magical corruption.

• Improved the method through her own mathematical analysis rather than following its supplied route. 58
• Meditation enhanced her strength, constitution, agility, spirit, perception, and magic power. 58
• Her physical abilities eventually surpassed ordinary humans; she could shatter boulders and lift nearly a thousand pounds. 66
• Ace later noted that her continued use of the Minimalist Meditation Method was limiting her progress. 79

Daina Steel Fist Style

An enchanted martial skill created by Daina through the direct use of solidified magic power. 70

• Temporarily doubles her overall physical condition for roughly ten minutes. 70
• Can be combined with Electric Tremor Activation to raise her physical performance to a hero-like level for a short period. 108 145
• Forms the basis of her “Steel Fist Daina” identity as a demon hunter. 79

Magic Crystal Molding

Daina specializes in rapidly shaping magic crystals into weapons, armor, and other combat tools.

• Developed Magic Crystal Molding as a unique minor spell. 71
• Can create short swords, gauntlets, shields, full-body armor, spears, and projected weapons. 70 74 108
• Developed lightning-property and unstable projectile magic-crystal weapons. 74
• Can rapidly construct multiple spell models in combat; she produced seven unstable burning magic-crystal swords during an ambush. 144

Magic Crystal Enhancement

Daina created a unique enhancement spell specifically for her shaped weapons. 71

• Reinforces the rigidity, toughness, and durability of magic-crystal armaments to nearly the level of minor magic weapons. 71
• Allows damaged magic-crystal weapons to recover rapidly. 70
• Her later blood-red magic crystals gained defensive, offensive, devouring, and bloodthirsty properties after being cultivated from monster souls. 145

Combat Skills

Daina is an accomplished close-range combatant, especially in unarmed fighting.

• Received entry-level sword-and-shield knowledge through Ace's experimental knowledge-infusion spell. 65
• Trained boxing, leg techniques, movement, evasion, and sword-and-shield combat. 66 68
• Uses Spell Thrust, Spell Bounce, and Local Reinforcement to augment mobility, impact, and durability. 70
• Became a recognized demon hunter despite concealing much of her supernatural strength. 79

Simulated Projection

Daina's evolved innate magic as a second-ring wizard. 365

• Used to form a simulated bed that carried the unconscious Ace. 365
• Its full applications and limitations are not documented in the available material.

Equipment / Items

• Contracted magic book — Six-page magical book linked to Ace and capable of partial transformation. 56
• Iron mask — Worn while operating as Steel Fist Iron Mask and leading surviving wizard apprentices. 108 143
• Sword, shield, and gloves — Prepared for travel and combat after gaining martial training. 66
• Magic-crystal armaments — Her self-developed weapons, armor, shields, gauntlets, and projectiles. 70 74
• Pendant — Contains a dormant infant with complete organs, a soul secret space, and a true spirit shadow. 376
• Contract Bead — Entrusted to her by Ace for communication with the magic ship Seeker. 218

Relationships

• Ace — Teacher, contractor, and object of Daina's affection. He introduced her to magic, accepted her as his disciple, and repeatedly relied on her judgment and leadership. 53 67 160 221
• Mirror Ace — Continued guiding Daina and the apprentices during Ace's absence; later returned to explain events in the Northern Territory. 108 141
• Bayern — Scholar acquaintance from her early studies; Daina later reunited with him while masked. 65 143
• Polina — Apprentice under Daina's care; Daina identified her as capable of learning logic and mathematics. 109
• Sulu — One of Daina's wizard apprentices. She dislikes his cowardice and tendency to avoid fighting. 109
• Romon — Worked with Daina to evacuate Ace Manor's people to the Seeker. 220 221
• Alesha — Daina became jealous of Ace's Mindscape servant and bound her after Alesha brought the unconscious Ace to the High Tower. 365

Story Role / Major Arcs

Library Scholar

Daina begins as a library worker and aspiring scholar. Her shared love of learning creates her first connection with Ace. 11

Initiation and Discipleship

Ace selects Daina as his first magic-book test subject, contracts her as a wizard apprentice, then reveals his identity and accepts her as a disciple. 54 55 56 67

Northern Territory Journey

Traveling with Ace, Daina develops her enchanted martial art and magic-crystal spell series. Ace recognizes her as a genuine magical researcher after she independently designs unique spells. 67 70 71 74

Steel Fist Demon Hunter

Operating in the demon-hunter wilderness, Daina establishes the reputation of “Steel Fist Daina” through unarmed combat and magic-crystal molding. 79

Iron Mask Resistance Leader

Following the Legion's attack on the Enchanting Wizard Apprentices, Daina becomes the masked leader of the survivors. She organizes guerrilla attacks, protects apprentices, and fights Legion forces with her evolved combat magic. 108 109 143 145

High Tower Leader

Daina helps establish and defend the High Tower territory, oversees practical projects such as port surveying, and later coordinates defenses and evacuation preparations in Ace's absence. 207 329

Second-Ring Wizard

By the time of Ace's return, Daina has become a second-ring wizard whose innate magic has evolved into Simulated Projection. 365

Trivia

• Daina was initially so fascinated by her magic book that she neglected Ace's Elementary Mathematics (Part 3) studies. 61
• She originally hoped to exchange for a second magic book so that Ace could become her “junior,” unaware that he was the fire-lighter behind her own book. 61
• Daina is left-handed; Ace adjusted the sword-and-shield knowledge infusion accordingly. 65
• Her understanding of calculus later influenced rune construction and improvement projects, and the High Tower Council made Calculus mandatory for magic-school graduation examinations. 443