Ceruno

Biodata

Feature	Details
Name	Ceruno (赛露诺)
Alias(es)	Sun Yao; A-Yao 18 1071
Species/Race	Magical Girl; later an independent consciousness within the Earth Crystal 308 995
Gender	Female; formerly lived as male prior to choosing to remain Ceruno 101 465
Affiliation	Magical Girl Association; City School; Special Operations Squad 278 577
Occupation/Role	Magical Girl, idol, City School student, and protector against Dark Energy-related threats 131 271 379
Status	Active; returned after her existence and memories had been erased 995 1077 1119
First Appearance	Chapter 12, as Ceruno 12

Power Progression

Stage / Realm / Level	Chapter	Notes
Newly awakened Magical Girl	12	Discovers that her bubble magic creates a space governed by rules shaped by her beliefs; defeats a Tiger Monster by drowning it inside a bubble. 12
Bubble Witch	41, 308	Develops named applications such as the Bubble Convex Lens; the Central Control System later displays her official title as “Bubble Witch—Ceruno.” 41 308
Dark Energy restraint	259	Learns that her bubbles can compress and seal Dark Energy-born shadow soldiers, establishing that her magic can reject or restrain darkness. 259
Teleportation magic	285	Successfully recreates a teleportation spell after observing it once, initially opening only small linked rings. 285
Super Ceruno 2.0	337	Assumes a taller, golden-haired princess-like form with a golden spear; withstands Fomalhaut’s massive sword aura through pure defense. 337
Triple-core configuration	510	Absorbs an Artificial Vega Crystal; Mono creates an interface linking it to her Star Crystal with Dark Energy threads, improving magical-power transmission and calculation efficiency. 510
Star Guardian / Terra’s agent	601, 619	Draws upon Miss Terra’s power to defend City School and its magical girls, eventually taking control of City School’s domain as an enormous bubble. 601 619
Aurora-powered combat state	647	Merges with Aurora’s power to fight the incomplete Great Will, though the Dark Energy fueling this strength threatens to burn her out. 647
Earth Crystal consciousness	995	Retains independent thought after becoming part of the Earth Crystal and proposes maintaining equilibrium between light and darkness. 995
New World re-emergence	1077	Reappears through her Vega Crystal after her light and darkness move toward balance, joining Miluno against Mi Xue. 1077

Background and History

Sun Yao, also called A-Yao, was Miluno’s best friend and an enthusiastic admirer of the mysterious speed-type magical girl long before learning that Miluno was Bai Ziye. After becoming a Magical Girl, she adopted the name Ceruno and sought to become an “ideal” magical girl and girl in general. 2 18 1070

Ceruno’s first recorded battle ended in an overwhelming but troubling victory: she trapped a Tiger Monster in a bubble and drowned it. The experience taught her that her magic could be lethal despite its defensive nature, while also leaving her concerned that she lacked direct offensive power. 12

She pursued idol activities alongside her magical-girl work, receiving harsh physical training from Sirius and support from Yezi, who became her manager. Although Ceruno struggled with stage fright at her debut press conference, she recovered by singing and openly stated her wish to grow into a strong idol like Sirius. 51 131

As Dark Energy became a central threat, Ceruno’s ability to restrain it made her an important partner to Miluno. The Association formally assigned the two to a group responsible for Dark Energy-related incidents and positive public outreach through concerts. 259 271

During the war surrounding City School and the Great Will, Ceruno became increasingly tied to the Earth Crystal and Miss Terra. She protected large numbers of magical girls with expanded barriers, acted as the Earth Crystal’s Guardian, and risked crystallization through repeated use of Terra’s power. 513 601 619 637

Ceruno eventually requested that the Earth Crystal erase her existence and memories. Even after becoming part of its collective consciousness, she retained independent thought and later re-emerged in the New World, where she works with Miluno to oppose Mi Xue and preserve the balance between light and darkness. 995 1077

Appearance

In her usual magical-girl form, Ceruno is a petite girl with distinctive pink hair and a bright idol-like Battle Dress. Her appearance changes drastically in stronger forms, most notably her golden-haired “Super Ceruno 2.0” state. 18 56 101 337

• Pink hair, which she can alter with magic for disguise purposes. 18
• Shorter than Miluno, with a notably petite build. 101 507
• Pink-and-white dress-style Battle Dress, paired with a ruby wand. 56
• In her Super Ceruno form, she has fluffy golden hair, a white gauze gown, and a golden spear set with a ruby. 337
• Her Ghost Combat Suit is white and features a rabbit-eared helmet. 474

Personality

Ceruno is earnest, gentle, and highly empathetic. She is deeply uncomfortable with cruelty, worries about collateral damage and injured allies, and remains willing to help even those whom others might dismiss as enemies. 12 494 1048

Her confidence is inconsistent. Ceruno often doubts whether she is qualified to be a magical girl or idol, and this is especially harmful because her magic depends on what she believes possible. Encouragement from Miluno, Heat Haze, Sirius, and others repeatedly helps her act decisively. 41 51 131

Despite her insecurity, Ceruno is inventive under pressure. She develops new uses for her bubbles, proposes reconnaissance plans, rapidly learns teleportation, and ultimately formulates a long-term strategy for balance between the Earth Crystal and the Great Will. 285 326 995

Abilities & Skills

Bubble Magic

Ceruno creates bubbles and membranes whose properties are determined by the rules she believes they should follow. Her magic is primarily defensive and controlling rather than directly destructive. 12

• Can trap targets and control their ability to enter or leave a bubble. 12
• Can suffocate or drown restrained enemies by changing the bubble’s environment. 12
• Creates Bubble Membranes to shield herself, allies, structures, and entire battle zones. 85 513
• Can enlarge her protection to cover City School during a large-scale Witch and Monster assault. 513
• Her early lack of confidence and limited offense restrict her effectiveness. 12 41
• Powerful opponents and concentrated darkness can break through her defenses. 494

Bubble Lens and Sensory Applications

Ceruno can shape bubbles into lenses for observation and use them to interact with light and distant targets. 41 46 513

• Uses the Bubble Convex Lens to enhance observation. 41
• Attempts to redirect Sirius’s lasers by reflecting them with bubble magic. 46
• Uses a bubble lens from a rooftop to monitor distant battlefield events. 513
• Develops the ability to sense Dark Energy while on patrol. 219

Dark Energy Restraint

Ceruno’s bubbles can isolate, compress, and obstruct Dark Energy, making her unusually valuable in operations involving Witches, contaminated crystals, and the Great Will. 259 271

• Compresses shadow soldiers into spheres by coating them in Bubble Membranes. 259
• Blocks Aldebaran’s controlling black light from reaching Miluno. 575
• Uses bubble barriers to protect allies from Dark Energy manifestations. 601
• Can create a micro-world that separates her group from reality and prevents outside interference. 1119

Teleportation Magic

Ceruno learns teleportation through observation and later uses it as a practical movement and infiltration tool. 285 474

• Opens linked rings to transfer small objects during her first successful use. 285
• Uses teleportation passages for rapid travel to the Engine Department and other locations. 474
• Repeated teleportation can exhaust her mana. 480

Earth Crystal and Guardian Power

Ceruno can receive power from Miss Terra and the Earth Crystal, dramatically increasing the scale of her defenses and granting her authority over large protective domains. 601 619

• Maintains City School’s main bubble while placing individual barriers around allied magical girls. 601
• Allows Miss Terra to take control of her body in emergencies. 608
• Detaches City School’s barrier from the wormhole and transforms it into a complete giant bubble-domain. 619
• Heavy reliance on the Earth Crystal raises her compatibility and risk of crystallization. 619 637
• Was warned that Star Guardian power could reduce her to a tool of the Earth Crystal. 620

Equipment / Weapons / Items

• Ruby Wand / Crystal gun-staff — Ceruno’s casting weapon; later gains a sharp metal frame around its ruby spearhead. 56 510
• Ruby Trident — The evolved form of her wand, used effectively in close combat against Monsters. 561
• Ghost Combat Suit — White, fitted combat suit designed by Metal; its rabbit-eared helmet includes remote recording and directional eavesdropping functions. 474
• Magic-supply belt connector — A retractable tube on her Ghost Combat Suit can connect to Miluno’s belt to receive magic power; its maximum range is three meters. 474
• Artificial Vega Crystal — An imitation crystal linked to her original Star Crystal through Mono’s interface, creating her triple-core configuration. 510

Relationships

• Miluno / Bai Ziye — Best friend, combat partner, and lover. Ceruno admired Miluno before knowing her identity, and their relationship develops into a partnership central to both the Dark Energy war and the New World conflict. 1070 995
• Heat Haze — Early guide and earpiece support during Ceruno’s first battle; later helps push her through her difficult idol debut. 12 131
• Sirius — Trainer, mentor, and admired ideal. Sirius gives Ceruno harsh training but recognizes her potential and openly calls her a girl she likes. 51 61
• Metal — Equipment specialist and ally who provides Ceruno’s Ghost Combat Suit and supports her during City School’s defense. 474 566
• Mono — Ally who enables Ceruno’s Artificial Vega Crystal interface and later assists her livestream efforts. 510 1081
• Miss Terra / Earth Crystal — Guardian patron and eventual collective existence. Terra lends Ceruno power while attempting to protect her from being consumed by the Earth Crystal. 601 646 995
• Fomalhaut / Ice Dragon — Ceruno’s mother, who intervenes repeatedly to protect her from darkness and the Earth Crystal’s consequences. 646
• Phoenix — Close battlefield ally who supports Ceruno emotionally and fights alongside her during City School’s siege. 513 561

Story Role / Major Arcs

• Early Magical-Girl Career — Defeats the Tiger Monster in her first battle, discovers the belief-based nature of her bubble magic, and begins pursuing the ideal magical-girl image. 12 18
• Idol Training and Debut — Trains under Sirius, works with Yezi as her manager, and begins her idol career despite severe public-speaking anxiety. 51 131
• Dark Energy Operations — Learns to restrain Dark Energy and is formally paired with Miluno for Dark Energy incidents and concert-based public outreach. 259 271
• City School Defense — Gains an Artificial Vega Crystal, becomes a triple-core magical girl, and expands her bubble barriers to protect City School during the Great Will’s assault. 510 513
• Star Guardian Crisis — Draws upon Terra’s power, confronts the prophecy surrounding her role as Star Guardian, and risks crystallization to defend her allies. 601 620
• Earth Crystal and New World — Becomes part of the Earth Crystal, returns with independent will, and joins Miluno in opposing Mi Xue’s control of the New World. 995 1077
• Comeback Livestream — Returns to Skyreach City with Night Owl, Betelgeuse, and Zara to livestream her reappearance and counter the other Miluno’s influence. 1081

Notable Quotes

“We do not need charity.” 625

Trivia

• The Central Control System identifies Ceruno by the title “Bubble Witch.” 308
• Ceruno is unusually popular with Sirius’s dogs. 50
• Her Ghost Combat Suit’s rabbit ears are part of a helmet designed for surveillance and reconnaissance rather than merely decoration. 474