Da Vinci

Biodata

Feature	Information
Name	Da Vinci
Alias(es)	“Omnipotent Genius”; “All-Purpose Person”; Da Vinci-chan
Species/Race	Pseudo-Servant 197
Gender	Female 156
Affiliation	Chaldea
Occupation/Role	Chaldea strategist, engineer, researcher, negotiator, and logistics support
First Appearance	Chapter 155

Background / History

Da Vinci is one of Chaldea’s representatives alongside Dr. Roman. She agrees to Xiu Er joining Chaldea, arguing that the organization should make use of every available fighting force in defense of Human Order 156 157.

At Chaldea, she regularly shares Dr. Roman’s workload and still finds time for independent research. Roman considers her an exceptionally capable assistant due to her methodical work and efficiency 264.

During the Sixth Singularity, Da Vinci travels with Fujimaru Ritsuka, Mashu, Xiu Er, and their allies. She serves as the group’s primary interpreter of Xiu Er’s reconnaissance, negotiator with the Mountain People, and technical support during their approach to the Holy City 184 210 217 245.

Personality

Da Vinci is confident, playful, and fond of theatrics. She adds magical smoke and sound effects when unveiling her inventions, openly enjoys praise, and frequently teases Fujimaru Ritsuka and Xiu Er 195 210 223.

Behind her casual manner, she is perceptive and responsible. She recognizes when negotiations require a gentler approach, monitors the behavior of potentially hostile parties, and understands when to stop joking before it damages trust 215 217 219. She is also concerned for Dr. Roman’s health, asking Xiu Er to stop supplying him with potions that enable him to work without sleep or food 171.

Da Vinci possesses strong intellectual curiosity, particularly toward unknown technology. After using Xiu Er’s construction block to expand the Mountain People’s village, she immediately wants to investigate the item’s broader functions 225.

Abilities & Skills

Engineering and Magecraft

Da Vinci can construct practical machinery and infrastructure from limited materials.

• Created a golden desert off-road vehicle from materials collected at a temple 195.
• Installed an auto-drive function in the vehicle and powered it through a staff-compatible socket 195 197.
• Stored the vehicle, travel supplies, and a temporary house inside an Item Bag after the journey 197.
• Used magic alongside Xiu Er’s construction block to raise rows of houses, nearly doubling the Mountain People’s village in half an hour 225.
• Can manage a large part of Chaldea’s logistical workload while continuing her own research 264.

Analysis and Reconnaissance

Da Vinci assesses magical phenomena, battlefield conditions, and unusual environments.

• Used real-time Magic Resistance monitoring to determine that Nitocris’s magical power had been abruptly sealed rather than merely restrained 180.
• Deduced that the destruction around the Holy City was likely man-made and advised gathering information before acting 197.
• Identified the unusual danger of the Sixth Singularity and participated in planning Chaldea’s response 171.
• Interprets Xiu Er’s reconnaissance reports for the wider group, including the Holy City’s heightened alert status and the Lion King’s position 245.

Negotiation and Leadership

Da Vinci is Chaldea’s principal diplomat in discussions with civilians and the Mountain People.

• Takes over negotiations when Fujimaru Ritsuka lacks the experience or confidence to handle them alone 215.
• Persuades Smoke Drunk Hassan to consider sheltering refugees by addressing the Mountain People’s concerns over resources and security 217.
• Understands that the Mountain People’s proposal is a request for aid rather than a transactional demand 223.
• Coordinates the construction and accommodation effort for refugees with Chaldea members and the Hassans 224 225.

Equipment / Items

• Staff — Used for magecraft, including operating the desert vehicle and controlling construction magic 195 225.
• Item Bag — Stores the desert vehicle, supplies, and a temporary shelter 197.
• Desert Off-Road Vehicle — Golden open-top vehicle with a smiling cat decoration and claw-like doors; includes an auto-drive function 195 197.
• Xiu Er’s construction block — A golden-patterned cube lent to Da Vinci; dramatically improves the efficiency and magical cost of large-scale construction 225.
• Communication device from Xiu Er — Can be used to contact Xiu Er across locations 195.

Relationships

• Xiu Er — Chaldea companion whose immense versatility both fascinates and frustrates Da Vinci; she often calls on him for combat support, reconnaissance, transport, and construction assistance 180 214 225.
• Dr. Roman — Fellow Chaldea representative and frequent work partner; Da Vinci worries that Roman’s reliance on Xiu Er’s potions has caused him to abandon sleep and regular meals 171 264.
• Fujimaru Ritsuka — Chaldea’s young Master; Da Vinci mentors, teases, and supports him while trusting his final judgment in key decisions 210 211.
• Mashu — Chaldea companion who travels with Da Vinci during the Sixth Singularity and assists her in supporting Fujimaru 195 201.
• Smoke Drunk Hassan — Initially wary negotiation counterpart; Da Vinci earns her cooperation through a combination of diplomacy and Xiu Er’s demonstration of strength 217 218.
• Hundred-Faced Hassan — Mountain Person whose surprise at Da Vinci’s construction work helps underscore the impact of Xiu Er’s block 225.
• Bedivere — Da Vinci is curious about his concealed identity and later supports the team’s plans involving his confrontation with the Lion King 184 241.

Story Role / Major Arcs

Chaldea Alliance

• Participates in Chaldea’s decision to accept Xiu Er as an ally for the sake of Human Order 156 157.
• Attempts to establish behavioral boundaries with Xiu Er after he intrudes into another person’s room; Xiu Er agrees to modify his behavior 161.
• Intervenes when Roman’s use of Xiu Er’s potions causes him to neglect rest, obtaining Xiu Er’s agreement to stop supplying them 171.

Sixth Singularity

• Accompanies Fujimaru, Mashu, and Xiu Er through the desert, creating their transport and guiding their approach to the Holy City 195 197.
• Helps identify the Mountain People as a third potential refuge destination besides the Pharaoh and the Holy City 210.
• Leads negotiations with Smoke Drunk Hassan, using Xiu Er’s power display to establish Chaldea’s credibility 215 217.
• Uses Xiu Er’s construction block to rapidly provide housing for incoming refugees 224 225.
• Supports the group’s final approach to the fortified Holy City by interpreting Xiu Er’s intelligence and assessing the Lion King’s defenses 245.

Trivia

• Da Vinci refers to herself as a “genius” and the “All-Purpose Person” with complete confidence 195 264.
• She suppresses her urge to study Xiu Er after his appearance changes following a Spiritron Transfer, despite obvious curiosity 207.
• Xiu Er’s overwhelming collection of armaments makes Da Vinci jokingly complain that her own brilliance has been overshadowed 180 212.