Caslathdi

Biodata

Feature	Details
Name	Caslathdi (卡丝拉狄)
Alias(es)	Fifth Princess of the Augustus Empire; Crown Princess; Prince Caslathdi
Gender	Female
Affiliation	Augustus Empire; Gate of Janus liaison
Occupation/Role	Imperial princess, claimant to the Augustus throne, political leader of the Southern Territory
Status	Alive; later withdraws from the throne struggle to focus on sorcery studies 236
First Appearance	Chapter 10

Power Progression

Stage / Realm / Level	Chapter	Notes
Holy Word Speaker, Janus path	42	A pure-blooded mage profession with exceptionally high burst damage.
Transcendent close to Fourth Tier	65	Could not disregard concentrated firearm fire despite her magic shield, but remained a major supernatural combatant.
Approaching Fifth-Tier Transcendent	236	Her cultivation accelerated after the Old Emperor's death, leaving her sprinting toward the Fifth Tier.

Background

Caslathdi is the Fifth Princess of the Augustus Empire. She studied at St. Marian Academy under Heino, who considers her her only true student and later provides her with alchemy puppets and political support. Caslathdi also knew the dwarf Kavanagh during her academy years and concealed Kavanagh's identity so she could study safely. 110 247

She first comes to Berman City ahead of her public entourage, traveling secretly with Eiko to investigate the Hand of Darkness and seek a class-transfer relic connected to the Soul Eater path. Although the relic disappears, Caslathdi refuses to leave immediately because meeting Mayor Bill is vital to her plans. 10

Appearance

Caslathdi is a blonde, fair-skinned young woman whose formal presentation emphasizes her royal status and composed bearing.

• Golden hair, worn loose behind her in formal settings 171
• Often dresses in refined formal gowns, including white and violet dresses 171 236
• Wears a cross-sword pendant used to invoke Kael's Sword of Judgment 52
• Maintains an elegant, noble demeanor even in political gatherings 171 247

Personality

Caslathdi is observant, ambitious, and politically adaptive. Her secret arrival in Berman City, continued pursuit of Mayor Bill despite assassination threats, and later willingness to work with Magana all reflect a willingness to maneuver through dangerous power struggles. 10 74 128

She is also protective of those under her command. While fleeing Kosotoya, she refuses to abandon her Royal Guards; after the Southern Territory's heavy casualties, she seeks funds to compensate the families of the dead and injured. 65 74 She publicly shields Shally from noble complaints because she considers Shally indispensable to the war effort. 86

Her determination to claim the throne hardens as the Old Emperor becomes increasingly unstable. Rather than return to Baron and risk confinement, she chooses to consolidate the Southern Territory and eventually force her father to abdicate. 125

Abilities & Skills

Holy Word Speaker

Caslathdi follows the Janus path as a Holy Word Speaker, a mage profession focused on powerful offensive magic. 42

• Can contend with high-level Supernatural Beings such as Adler, though his Soul Eater defenses and absorption abilities limit her attacks. 42
• Established an Inner World barrier at Berman City's Clock Tower during the Mass Day ambush. 41
• Uses magic shields, but sustained firearm fire can overwhelm them. 65
• Her mana reserves are a critical limitation; repeated major spells leave her pale, injured, and unable to continue fighting effectively. 65 72

Kael's Sword of Judgment

Caslathdi channels magic through her cross-sword pendant to manifest Kael's Sword of Judgment. 52

• Severely wounded Adler during the Clock Tower confrontation. 42
• Wounded Mayor Bill during the Berman City crisis. 52
• Split a tiger-headed cultist in half while rescuing her Royal Guards. 72
• Can be moderated for capture rather than killing, reducing its power accordingly. 52
• Requires substantial mana; Caslathdi could not sustain its full form after repeated use. 72

Battlefield Magic

Caslathdi can adapt terrain and spellcasting to delay larger forces.

• Destroyed an unstable rock formation to create a rockslide against Kosotoya pursuers. 65
• Used her remaining magic to protect and direct the retreat of her Royal Guards. 65

Political Leadership

Caslathdi uses her royal authority to consolidate allies and secure territory.

• Secured Berman City after Bill's defeat and selected Ryan as its mayor because she found no more suitable candidate. 56 57
• Coordinated recruitment and military expansion with Ryan after Berman City's army was depleted. 57
• Negotiated a temporary cooperation arrangement with Magana to investigate the attacks on her and remove hostile southern forces. 74
• Used an engagement banquet, loyalty tests, and blood-pact contracts to force Southern Territory nobles to declare support for her claim. 113 114

Equipment / Items

• Staff — Used while confronting Ryan and resisting the Hand of Darkness. 27
• Cross-sword pendant — Focus for Kael's Sword of Judgment. 52
• Janus teleportation scroll — A one-use item capable of randomly teleporting its user away; held as an emergency escape option during the Kosotoya pursuit. 65
• Frostmourne — Prepared for a possible direct confrontation with the Old Emperor. 111 153
• Kavanagh's bronze hammer token — A token left by her former academy classmate, intended to help locate the dwarves. 247

Relationships

• Ryan — Political ally and confidant. Caslathdi appoints him Mayor of Berman City, entrusts him with the Southern Territory, and relies on his judgment during repeated crises. Their engagement banquet is used to rally support for her claim. 57 102 113
• Heino — Her teacher and principal protector. Heino is Caslathdi's only true student-teacher bond at St. Marian and supports her with alchemy puppets, counsel, and personal protection. 110 155
• Eiko — Loyal attendant and combat subordinate. Eiko accompanies Caslathdi during her secret Berman City investigation and supports her during the Kosotoya retreat. 10 72
• Jonathan — Burning Covenant investigator and trusted battlefield ally. He assists Caslathdi against Adler, Kasa, and Bill. 41 42 52
• Shally — Ryan's subordinate and Caslathdi's crucial military asset. Caslathdi initially recognizes that Shally's loyalty belongs to Ryan, then repeatedly protects and seeks to retain her because of her extraordinary combat value. 65 71 86
• Magana — Rival and temporary ally. Their first meeting is tense, but Caslathdi accepts a temporary cooperation arrangement and later exploits Magana's betrothal gifts to strengthen her own faction. 74 128 131
• The Old Emperor — Her father and principal political opponent. Caslathdi comes to believe his instability threatens both her freedom and the Empire, leading her to rebel against him. 125 153
• Kavanagh Sedlin — Former academy classmate and dwarf ally. Caslathdi protected Kavanagh's identity at St. Marian and later seeks her help in contacting the dwarves. 247
• Lin Qi — Friend in Berman City and public associate through the Gate of Janus. 14 57
• Vainay — Initially a public supporter of Caslathdi's claim, later the figure who sidelines her during the imperial succession settlement. 113 157

Story Role / Major Arcs

Berman City Investigation and Crisis

Caslathdi enters Berman City secretly to investigate the Hand of Darkness and obtain a supernatural path for her faction. Her search brings her into contact with Mayor Bill, whose hidden allegiance makes Berman City a center of political and cult activity. 10 14

During Mass Day, Adler and Kasa ambush her. Caslathdi escapes with Ryan's help, erects an Inner World barrier at the Clock Tower, and battles Adler with Kael's Sword of Judgment before he escapes. 41 42 She later fights Bill alongside Jonathan, wounds him with the same weapon, and helps secure Berman City after the Blood Cult's sacrifice triggers a wider crisis. 52 56

After taking control, Caslathdi appoints Ryan as Mayor of Berman City and begins rebuilding its depleted military strength. 57

Kosotoya Rescue and Southern Consolidation

Caslathdi leaves Berman City for Kosotoya, entrusting its administration to Ryan. Her train is attacked, and she is hunted by the Kosotoya army while attempting to protect her Royal Guards. 63 64 65

Her rockslide only delays the pursuers, but Shally arrives under Ryan's orders and holds the army back with Blood Minions and overwhelming swordsmanship. Caslathdi recognizes that Shally's loyalty belongs to Ryan rather than to imperial status. 65 67

After surviving the assault, Caslathdi cooperates temporarily with Magana, seeks compensation for the war's victims, and supports Shally's increasingly ruthless campaigns against Kainter forces despite noble protests. 74 86

Claim to the Throne

The Old Emperor summons Caslathdi back to Baron while appearing to undermine her Southern Territory power base. She entrusts its stability to Ryan and begins preparing for a direct succession struggle. 102 103

Caslathdi gathers support through an engagement banquet with Ryan, where hostile nobles are exposed through Vainay's mental abilities and forced to sign contracts supporting her claim. 113 114 As her father's rule becomes more violent, she decides not to return to the Imperial Capital and instead plans to unite the Southern Territory before marching under the banner of “serving the king.” 125

With the Gate of Janus supporting her as its liaison, Caslathdi accepts Magana's betrothal gifts to publicly frame Magana as submitting to her faction and redirect the resources to her forces. 126 128

Rebellion in Baron

Following Ryan's apparent death, Caslathdi concludes that the Old Emperor is trying to halt her momentum and resolves to launch war against the Imperial Capital. 134 At the Emperor's birthday banquet, she stages her rebellion, using defected Royal Guards and Burning Covenant members to seize Baron City's gates. 153

The Old Emperor nearly kills her under the Blood God's influence, but Heino intervenes. His power later collapses, allowing Magana to strike him. 155 In the political settlement that follows, Vainay's rise displaces Caslathdi from the immediate path to the throne. 157

Later Activities

Vainay later assigns Caslathdi responsibility for building a Sorcerer Tower as part of Augustus's effort to cultivate its own Supernatural Beings. 197 Caslathdi ultimately abandons the throne struggle, devotes herself to sorcery studies, and advances rapidly toward the Fifth Tier. 236

She also renews contact with Kavanagh in hopes of securing dwarven knowledge of machinery and forging for Augustus. 247 249