Aqua

Biodata

Feature	Details
Name	Aqua (阿库娅)
Alias(es)	Aqualala; Aquarara 275 330
Species/Race	Mermaid; reincarnation of the Water Goddess 9 330 332
Gender	Female 9
Affiliation	Mermaid Tribe/Kingdom; Sea Tribes 322 332
Occupation/Role	Water Goddess and guardian of the Sea Tribes 322 333
Status	Active 543
First Appearance	9

Power Progression

Stage / Realm / Level	Chapter	Notes
Grand-level water mage	98 260	Her concealed power is exposed as Grand Magister-level; she is later described as a water-element Grand Magic Master.
Master of the Desire of Sloth	278	Sloth recognizes her as its master and begins a power-fusion process, briefly causing Aqua to faint.
Restored divine power — first shrine	331	Her past self returns power sealed within an underwater shrine; Aqua regains a human form and begins reclaiming her scattered divine power.
Water Goddess	332	Her awakened power matches Mayona's Magic Power, allows her to repel Mayona's attack, and confirms her identity to the Mermaid Tribe and Sea Tribes.

Background

Aqua initially lived as an apparently ordinary mermaid in Ruby's lake. Mayona immediately recognized her as a Sea Tribe mermaid, while also noticing Aqua's blue eyes, blue hair, ear fins, shell covering, and pale-blue fishtail. Aqua used the name of the Water Goddess despite Mayona's warning that Sea Tribes would not normally dare give that name to a descendant. 9 10

Ruby relied on Aqua's purification magic to maintain the lake and clean poisonous water left behind by the Poison Dragon. Although she complained about the exhausting work, Aqua repeatedly agreed when tempted with food or Ruby's attention. Ruby also refused to relocate from the lake because moving Aqua without a secure aquatic habitat would put her at risk. 21

When Ruby planned to send her back to her people, Aqua refused to be separated from him and angrily struck him with her tail. She later traveled to find him on her own by enclosing herself in moving water spheres, motivated by loneliness and her desire to see him again. 35 92

Aqua's true identity became central during the crisis surrounding the Mermaid Kingdom. Empress Mia revealed that Aqua's real name was Aqualala and that Mia was her aunt; Aqua had been missing from her people for nearly two years. Aqua eventually encountered the Water Goddess within a shrine and learned that the Goddess was her past self. 275 330

Her past self had sealed divine power across multiple underwater shrines as part of an “adventure game.” After recovering the power stored in the first shrine, Aqua regained a human form, accepted that she was the Goddess's reincarnation, and publicly returned as the Water Goddess. 331 332

Appearance

Aqua is a beautiful blue-haired mermaid whose original form combines a human upper body with aquatic traits. Following her divine awakening, she gains human legs and is later commonly seen in a blue dress. 9 332 543

• Long blue or sky-blue hair and blue eyes. 9 541
• Pale-blue fins on her ears. 9
• Pale-blue fishtail in her mermaid form. 9
• Initially wears shells over her chest rather than conventional clothing. 9
• Gains human legs after recovering divine power from the shrine. 331 332

Personality

Aqua is impulsive, food-motivated, affectionate, and frequently described by others as foolish. She eagerly pursues Ruby, once declaring herself his “first wife,” and is easily persuaded into difficult work when he suggests finding another mermaid instead. 21 98

She is also mischievous and prone to taking credit for others' accomplishments, such as accepting praise for the Lava Turtle's defeat. Her lack of resolve is a serious weakness in battle: Sloth Aura easily overwhelms her, and she has forgotten to use elementalization when under pressure. 326 515

Despite her immaturity, Aqua is compassionate. She opposes killing the Lava Turtle unnecessarily, apologizes to the Sea Tribes for the Mermaid Tribe's past oppression, and becomes more willing to prioritize her followers over her desire to remain with Ruby. 322 327 333

Abilities & Skills

Water Magic and Purification

Aqua is an exceptionally capable water mage whose purification ability is valuable enough for Ruby to build specialized facilities around her. 21

• Can create water arrows and manipulate water offensively. 10
• Purifies contaminated water sources and rapidly clears ordinary muddy water. 21 260
• Cannot fully remove every remnant of Poison Dragon toxins; poisonous crystals remain after purification. 21
• Produces large volumes of water to fill artificial ponds and lakes. 260
• Travels over land inside a self-propelled water sphere, though prolonged use makes her dizzy. 92

Divine Water Authority

After recovering her divine power, Aqua can command water on a far greater scale than before. 332 515

• Forms water shields strong enough to block Mayona's hammer strike. 332
• Announces her return directly to believers across the Endless Sea. 332
• Perceives the Sea Tribes' activities and requests remotely. 333
• Converts dry land, trees, and earth into water elements to create an ocean-sized battlefield. 515
• Uses elementalization, turning her body into water to ignore physical attacks while liquid is available nearby. 515
• Can unleash a magically amplified steam explosion and form mercury into attacking dragons. 515

Limits

• Her combat effectiveness drops when she is far from water or other liquids. 515
• Elementalization must be consciously activated; Aqua has forgotten to use it in battle. 515
• Sloth Aura can incapacitate her almost immediately due to her weak resolve. 515

Desire of Sloth

Sloth is a green divine staff that recognizes Aqua as its master and fuses power with her. 278

• Sloth can act independently and has resolved problems when it senses Aqua's emotions, including the Seahorse Tribe's crisis. 329
• It refuses commands it considers too diligent or troublesome, even from Aqua. 327
• Amon extracts Sloth from Aqua during their battle, and Sloth immediately submits to the Demon King rather than resist. 515
• Aqua continues treating Sloth as a companion despite its betrayal. 542

Goddess Persona and Leadership

Aqua successfully performs the role of the Water Goddess before the gathered Sea Tribes, aided by Ruby's coaching and intimidation tactics. 320 321

• Her performance convinces the Sea Tribes to accept her authority. 321 322
• Publicly accepts responsibility for the Mermaid Tribe's mistreatment of other Sea Tribes. 322
• Takes on requests from numerous tribes, though she initially accepts more obligations than she can manage. 322 323
• Resolves most Sea Tribe problems over roughly half a month with Ruby's assistance. 330

Forbidden-Spell Legacy

Aqua's past self is credited with creating the water-element forbidden spell Aqua's Repentance, which transforms everything inside a water sphere into water. The earlier Aqua's Wrath reportedly caused a catastrophic tsunami that harmed Aqua's own side as badly as her enemies. 32

• Aqua claims knowledge of forbidden spells while presenting herself as the Goddess. 321
• She is not shown personally casting either forbidden spell in the documented events. 32 321

Equipment / Weapons / Items

• Desire of Sloth — Green divine staff and one of the Seven Deadly Sins; recognized Aqua as its master. 278
• Sky-blue palace token — A bead used to gain entry to the Tidal Empire's Imperial Palace. 274
• World Tree Seed — Given to Aqua by Mayona to complete the Sea Tribes' underwater tree-planting trial. 333

Relationships

• Ruby — Aqua's beloved partner and intended husband. He feeds, protects, and supports her, while Aqua repeatedly seeks affection and eventually kisses him after regaining her divine identity. 21 332 542
• Mayona — Rival and frequent target of Aqua's bickering, but also an ally who helps create Aqua's homes, supports her political performance, and gives her the World Tree Seed. 10 171 320 333
• Furia — Aqua's mother and a Mermaid Tribe leader. She initially dismisses Aqua's claim to be the Goddess but accepts it after Aqua's awakening. 318 332
• Empress Mia — Aqua's aunt and ruler of the Tidal Empire. Mia recognizes Aqua's real identity and entrusts Sloth to her. 267 275 277
• Sloth — Aqua's divine artifact and reluctant companion. Sloth recognizes Aqua as master but frequently refuses to help because effort conflicts with its nature. 278 327
• Kaluya — Claims Aqua was one of her powerful subordinates in a past life; later accompanies and assists Aqua during the Mermaid Kingdom crisis. 186 317
• Zelda — A bickering associate who shows concern for Aqua and later becomes excessively reverent after Aqua's ascension. 327 333
• Whale Overlord — Giant Whale Tribe representative who accepts Aqua as the Goddess and spreads word of her greatness after the Lava Turtle incident. 322 327
• Antuen — Lava Turtle subdued and named by Aqua; becomes her pet and takes the volcano's place. 327

Story Role / Major Arcs

• Ruby's Lake — Lives in Ruby's lake, pursues him romantically, and provides purification magic for the household's water supply. 10 21
• Academy Reunion — Reaches Ruby independently with water-sphere travel and reveals her concealed Grand Magister-level power after students trap her. 92 98
• Tidal Empire Crisis — Reveals her connection to the Tidal Empire, reunites with Empress Mia, and becomes involved in the Mermaid Kingdom's conflict with other Sea Tribes. 267 275 277
• False Goddess of the Sea Tribes — Initially impersonates the Water Goddess to prevent war, gains followers, and accepts responsibility for resolving the Sea Tribes' grievances. 320 322
• Water Goddess Awakening — Meets her past self at the Mermaid Kingdom shrine, restores divine power, and publicly returns as the Water Goddess. 330 332
• Sea Tribe Guardian — Remains behind to lead the Sea Tribes after Ruby's party departs, choosing responsibility over following Ruby. 333
• Battle Against Amon — Battles the Demon King with Chiyo and Mayona, creates an ocean battlefield, and uses elementalization, steam explosions, and mercury attacks before Sloth Aura incapacitates her. 515
• Wedding Arc — The Sea Tribes prepare Aqua's wedding to Ruby; their reunion is delayed by disputes over the ceremony, but Aqua and Ruby reconcile and plan to marry. 541 542

Notable Quotes

“God said, let there be water.” 515

“I am the true Goddess, no doubt about it.” 332

Trivia

• Aqua's tears become pearls. 21
• Ruby gives her a simple handheld console with only Tetris to keep her entertained while she stays in his bathtub. 170
• Before learning her true identity, Aqua unknowingly used the Water Goddess's name as an alias despite it being considered inappropriate for ordinary Sea Tribe descendants. 10 275 330
• She once called herself Ruby's “first wife,” to Ruby's dismay. 98