Mei

Biodata

Feature	Value
Name	Raiden Mei (梅) 9
Alias(es)	Herrscher of Thunder; Herrscher of Origin 142 224
Gender	Female
Affiliation	St. Freya Academy; Fifth Squad 30 143
Occupation/Role	Valkyrie trainee; swordswoman 21
First Appearance	Chapter 9 9

Power Progression

Stage / Realm / Level	Chapter	Notes
Herrscher of Thunder	142	Publicly identifies herself as the Herrscher of Thunder; fights using a Herrscher Armor and lightning-based power. 142
Imprint bearer	142–143	Accepts Chijie’s [Oblivion] imprint, then receives an additional imprint from Hua. 142 143
Herrscher of Origin	224	Inherits power entrusted by Elysia; her Herrscher of Thunder battlesuit is replaced by white armor. 224

Appearance

Mei is a tall, purple-haired young woman whose usual combat attire consists of red armor and a katana. Her imposing bearing and height give her a naturally queenly presence. 13 21

• Purple hair. 9
• Tall, slender build. 13 29
• Uses a katana in combat. 21
• Herrscher of Thunder armor manifests alongside lightning. 21 142
• Herrscher of Origin form uses white armor. 224

Personality

Mei is observant, guarded, and intensely protective of Kiana. Bai Yan’s sudden closeness with Kiana immediately puts Mei on alert; she initially treats him as a potential threat and resents what she sees as his attempts to take Kiana away. 9 10 13

Beneath her sternness, Mei is compassionate and self-critical. She worries about the consequences of her Herrscher identity and Changkong City, but is reassured when Bai Yan recognizes her as a gentle person rather than judging her for becoming a Herrscher. 29 30

In later arcs, Mei becomes increasingly analytical and determined. She investigates the Chrono-Sanctum’s imprints and the disappearance of Mu Continent, remains calm in uncertain situations, and is willing to fight even against opponents whose power greatly exceeds hers. 143 150 228

Abilities & Skills

Herrscher of Thunder Authority

Mei can assume the Herrscher of Thunder’s armored form and wield lightning in battle. 142

• Channels lightning around her body and weapon. 21
• Activates Conquest’s authority, turning lightning into a blade during her duel with Bai Yan. 86
• Retains her Herrscher identity while investigating the Pre-Civilization-era Flame Chasers. 142 154
• Her Herrscher core later stops responding after Bai Yan strips Cocoon-derived powers from her and her companions. 229 230

Beichen Ichiryu

Mei is a master of the Beichen Ichiryu sword style, fighting with a katana and rapidly escalating pressure through repeated strikes. 21 22

• Uses high-speed sword techniques resembling teleportation to exploit openings. 22
• Recognizes the development of Bai Yan’s Luoshen Swordplay and responds by using her authority rather than underestimating him. 86
• Continues to rely on swordsmanship when confronting Sakura, drawing her blade despite the apparent difference in strength. 228

Imprints and Signets

Mei receives powers associated with the Flame Chasers during her exploration of the Chrono-Sanctum. 142 143

• [Oblivion] — Chijie’s imprint; described as a powerful ability that will not harm its recipient. 142
• Hua’s imprint — Hua materializes and gives Mei another imprint after learning that she is the Herrscher of Thunder. 143
• Uses the resonance of Signets as a possible means to connect with Elysia’s marks across worlds. 230

Herrscher of Origin

Mei gains the Herrscher of Origin form through Elysia’s legacy. 224

• Her prior Herrscher of Thunder battlesuit changes into white armor. 224
• The form cannot be replicated by Bai Yan’s fabricated counterpart. 224
• Its power is linked to Elysia and the accumulated Signets. 224 228

Equipment

• Katana — Mei’s primary weapon and the focus of her Beichen Ichiryu techniques. 21
• Herrscher Armor — Manifested armor used with her lightning authority. 142
• Imprints — Receives Chijie’s [Oblivion] imprint and an imprint from Hua. 142 143

Relationships

• Kiana Kaslana — Mei considers Kiana the most important person in her world. Her protectiveness initially makes her suspicious of Bai Yan, and Kiana’s later betrayal leaves Mei unconscious after her gem is stolen. 9 13 55
• Bai Yan / Xiao Yan — Begins as a wary rival for Kiana’s attention, then gradually acknowledges his skill and accepts his support. Their relationship becomes strained again when Bai Yan’s plans and overwhelming strength place them on opposing sides. 13 22 30 217
• Elysia — Guides Mei through the Chrono-Sanctum, withholds information about its captain and Mu Continent, and ultimately entrusts Mei with the power of Origin. 143 154 224
• Chijie — Gives Mei the [Oblivion] imprint after she identifies herself as the Herrscher of Thunder. 142
• Hua — Meets Mei in the Chrono-Sanctum and grants her an imprint; later intervenes when Bai Yan captures Mei. 143 217
• Sakura — A fellow swordswoman and formidable opponent whom Mei confronts after gaining the Herrscher of Origin form. 228
• Pardofelis — Pardo’s reaction to Mei’s scent and accidental remarks point Mei toward the mystery surrounding the captain and Mu Continent. 150 154

Story Role / Major Arcs

St. Freya Academy

Mei meets Bai Yan after he enters Kiana’s class. She immediately questions his motives, believing his proximity to Kiana may harm or endanger her. 9 13 Her first practice match with Bai Yan reveals the elegance and complexity of his swordplay, though she forces him back and is ultimately caught by his sensory-disrupting technique, One Sword Startling Swan. 21 22

After the Changkong City incident, Mei confides in Bai Yan about her worries and her past. His willingness to protect her despite knowing she became a Herrscher deepens their trust. 29 30

Kiana’s Betrayal

Kiana secretly leads Mei into a crowded street while acting unusually disciplined and focused. There, Kiana reveals herself as the Herrscher of the Void, steals Mei’s gem, and leaves her unconscious. 55

Duel with Bai Yan

Mei later accepts Bai Yan’s challenge to a duel whose outcome determines the fate of their respective teams. Bai Yan defeats her using improved Luoshen Swordplay and the Sword of Protection; Mei accepts the loss with restraint. 86

Chrono-Sanctum Investigation

While exploring the Chrono-Sanctum, Mei seeks answers about the Pre-Civilization Herrschers, Flame Chaser imprints, and the disappearance of Mu Continent. 143 150 154 She receives Chijie’s [Oblivion] imprint and an imprint from Hua, but Elysia repeatedly refuses to fully explain the captain’s connection to Mu Continent. 142 143 154

Inheritance of Origin

During Bai Yan’s fabricated-world conflict, Mei realizes that Elysia has left her a new power. She transforms into the Herrscher of Origin and uses the Signets as part of the group’s attempt to escape and oppose Bai Yan’s plans. 224 230

Notable Quotes

“To me, Kiana is the most important person in this world!” 55

“How would we know without trying?” 228