Arena

Biodata

Feature	Details
Name	Arena Stuart (阿瑞娜) 2
Alias(es)	Miss Moth 2
Gender	Female 2
Affiliation	Stuart Family; Church of Night; Society of Hours; follower of Mansus 2 16 32
Occupation/Role	Daughter of Grand Duke Stuart; Darkness Path swordswoman 2 7
First Appearance	Chapter 1 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Sequence 8 — Dark Swordsman	7	Already an accomplished Darkness Path Beyonder when she prepares the operation against the Jasmine; she is confident in defeating a prepared low-sequence opponent.
Sequence 7 — Darkness Path	21 28	States that the Moon Bone’s effect has carried her to a higher sequence. She is later identified as a Silver Moon Swordmaster and begins seeking materials for Sequence 6.

Background & History

Arena is the daughter of Grand Duke Stuart, one of the Tudor Dynasty’s most prominent nobles. Her inheritance prospects are constrained by her three older brothers, leaving her determined to acquire power and influence of her own. She is described as possessing the fair skin, brown eyes, and black hair associated with the Stuart family’s rumored ancient Roman lineage. 2 5 6

Before joining the Society of Hours, Arena made dealings with the Black Devil Order and was afflicted by the Black Devil’s Curse. Arthur, acting as the hidden existence “Mansus,” drew her into the Secret Sect Long Table and used the Moth Principle to strip away the curse’s influence, though its mark initially remained on her body. She accepted Mansus’s offer to observe the world in his stead, chose the codename Moth, and received the Molting Technique to free herself from the Order’s control. 2

Seeking to sever her ties to the Black Devil Order and secure contraband for herself, Arena ordered Arthur to attack and sink the Jasmine. She tested Arthur’s loyalty at swordpoint, then entrusted him with her plan after he pledged support. 6

During the assault on the Jasmine, Arena fought alongside Dorian against Simon of the Black Devil Order. Dorian’s bewitchment by the Moon Bone turned the battle against her, but she later drew power from her Night Moon Necklace and suppressed Simon while Arthur stopped the undead Dorian. The Moon Bone subsequently helped her advance beyond Sequence 8. 10 11 12 21

Arena later won a Scholar Potion at auction for 20,000 gold coins. Within the Society of Hours, she pursued Moonlight Island’s route and other resources needed to continue advancing through the Darkness Path. 26 28

After the Black Devil Order’s ritual on Blue Bay Island, Arena worked with the Church of Night and led priests to secure the Blue Bay Private Tavern. She later trained in Fog City and sought Mansus’s help to gain enough power to challenge her brother Reilly in a swordsman’s duel. 37 45 46

Appearance

Arena combines noble refinement with the readiness of a professional swordswoman. Her attire varies between full combat armor and elaborate formal dress. 5 14 32

• Long black hair, often braided and coiled beneath a hairnet; she also wears it loose to her waist. 5 14
• Fair skin and brown pupils. 5
• Commonly carries a side sword or longsword bearing Stuart-family styling. 5 32
• Wears armor when expecting battle, including a helmet, breastplate, arm shield, and studded leather armor. 32
• Has a black skull-shaped Black Devil curse mark at her abdomen. 2

Personality

Arena is ambitious, defiant, and intensely concerned with controlling her own future. Resenting her limited position within the Stuart family, she initially considers building a pirate fleet to compete with her brothers, but accepts that advancing her own Sequence is a more effective route to influence. 6 14 16

She is direct and forceful in both strategy and personal dealings. Arena threatens Arthur when testing his loyalty, yet is willing to cooperate with him once he proves useful. Her former dealings with the Black Devil Order leave her openly hostile toward its followers and determined not to be controlled again. 2 6 10

Despite being raised with few expectations beyond serving as a “decorative vase,” Arena refuses to remain passive. She trains, seeks knowledge, makes practical trades, and petitions Mansus for greater power rather than relying solely on her family’s support. 28 45 46

Abilities & Skills

Darkness Path Swordsmanship

Arena is a Darkness Path Beyonder who began the story as a Sequence 8 Dark Swordsman and later reached Sequence 7 as a Silver Moon Swordmaster. 7 21 28

• Possesses the speed, flexibility, and agility characteristic of the Swordsman sequence. 7
• Uses the Stuart Family’s swordsmanship opening stance and fights effectively alongside other Stuart-trained swordsmen. 9 10
• Can wield darkness-based extraordinary power and secret arts unfamiliar even to other Darkness Path swordsmen. 9
• Fought Simon, a Sequence 8 Priest of Fury, and later engaged the drawing-based Beyonder Raphael during the Blue Bay Island crisis. 10 35

Silver Moon Power

Arena can invoke the moon’s power in battle through her Darkness Path and personal equipment. 11 35

• Chants “Silver! Moon!” in Ancient Hermetic Language while fighting Raphael. 35
• Can abruptly disappear from an opponent’s sight during combat. 35
• Her swordsmanship remains effective even without relying continuously on extraordinary enhancement. 35

Moth Principle and Molting Technique

As Mansus’s follower, Arena bears the Moth codename and possesses the Molting Technique. 2

• The Molting Technique can remove negative conditions, mirroring a moth shedding its cocoon. 2
• Arena intends to use it to remove the Black Devil Order’s remaining mark and end its control over her. 2
• She has received instructions for a disciple ceremony that would grant her deeper Moth power, but her completion of that ritual is not documented. 46

Strategic Judgment

• Identifies the value of individual extraordinary strength over an oversized pirate force after discussing succession politics with Arthur. 14 16
• Trades supplies for Edmond Tide’s Moonlight Island route and uses Society of Hours intelligence to alert the Church of Night to Black Devil Order activity. 16 28
• Recognizes the Moon Bone’s weakness: separating it from Dorian’s corpse ends its control over him. 12

Equipment / Weapons / Items

• Longsword / side sword — Her primary weapon; she uses Stuart Family swordsmanship with it. 5 9
• Night Moon Necklace — A precious Transcendent item that grants a short burst of moon power. 11
• Armor — Includes a helmet, breastplate, arm shield, and studded leather armor for combat operations. 32
• Scholar Potion — Won at auction for 20,000 gold coins. 26

Relationships

• Arthur — A Stuart-trained pirate captain whom Arena recruits for the Jasmine operation. Their alliance becomes increasingly pragmatic, with Arena later agreeing to help him enter England University under the identity Sherlock Albert. 6 7 37
• Mansus — The hidden existence Arena serves as “Miss Moth.” He removed the Black Devil’s Curse influence from her and granted her the Molting Technique. 2
• Dorian — A fellow Stuart-sponsored swordsman who initially fights beside Arena against Simon; after the Moon Bone bewitched him, he became one of her opponents. 10 11
• Simon — Black Devil Order Priest of Fury and former associate through Arena’s coerced dealings with the Order. Arena rejects his demand to resume their agreement and battles him aboard the Jasmine. 10
• Edmond Tide — Fellow Society of Hours member known as Mr. Red Grail. Arena trades supplies for his route to Moonlight Island. 16 28
• Reilly Stuart — Arena’s older brother and anticipated opponent in a swordsman’s duel; defeating him is central to her effort to control her own future. 45 46

Notable Quotes

“Black Devil Order, our cooperation is terminated unilaterally!” 2

“I want to obtain power!” 46