Dawn arrived with conditions that occurred twice per year.
The extreme low tide had withdrawn waters that normally covered the ancient ruins, exposing structures that most people never knew existed. From the beach, they could see stone formations rising from the retreating sea, geometric patterns too regular to be natural.
"Two hours," Kiyomi announced, consulting her tidal charts. "Maybe less. When the tide returns, it returns quickly."
"Then we don't waste time."
The descent required careful preparation.
Waterproof equipment protected their supplies. Headlamps illuminated spaces that hadn't seen light in generations. Communication devices ensured they could coordinate despite the ruins' sprawling layout.
"Blastoise, escort protocol."
Sasuke's Water-type emerged in full Mega Evolution, its presence providing security that the unstable environment demanded. If anything went wrong, structural collapse, unexpected flooding, Mega Blastoise could extract them faster than any alternative.
The ruins revealed themselves as they approached.
Stone structures emerged from receding waters with clarity that satellite imagery couldn't capture. Streets laid in patterns that suggested urban planning. Buildings designed with architectural sophistication that exceeded their apparent age.
"This was a city," Kiyomi breathed. "Not a village, not an outpost, a genuine city."
"A thousand years old?"
"At minimum. Possibly older." Her tablet captured everything, documentation proceeding with frantic efficiency. "We have two hours. I need to prioritize."
The city's layout became clearer as they navigated.
Central avenues connected residential districts to what appeared to be commercial zones. Larger structures suggested governmental or religious function. The engineering that had constructed these buildings exceeded what conventional history attributed to civilizations of this period.
"Advanced construction," Miyuki observed. "These foundations should have collapsed centuries ago. Something preserved them."
"Pokémon assistance?" Kasumi suggested. "Rock-types could have reinforced structures that human engineering alone couldn't maintain."
"Partnership visible in architecture." Kiyomi photographed foundation details that showed irregular patterns, tool marks too large for human hands. "They built this together."
The central temple dominated the city's heart.
The structure's scale exceeded the surrounding buildings by margins that suggested deliberate emphasis.
Carved reliefs covered every surface, imagery that told stories without requiring text. The central figure was unmistakable even to those unfamiliar with Legendary Pokémon: massive wings, elegant form, presence that radiated across stone despite millennia of separation.
"Lugia," Kiyomi identified. "Guardian of the Seas. This temple was dedicated to worship, or perhaps communication."
The interior confirmed her assessment.
Altar spaces positioned to receive offerings. Ceremonial pools that would have contained seawater during the city's active period. Inscriptions that Kiyomi's training allowed her to partially interpret.
"'Guardian protects those who respect the balance,'" she translated. "'The deep places know peace when harmony is maintained.'"
"They lived under Lugia's protection."
"More than protection. Partnership." Kiyomi moved deeper into the temple. "These tablets suggest active relationship, not worship from distance, but genuine interaction."
The tablets described what had ended that relationship.
"War between regions," Kiyomi read, her voice growing heavy. "Human conflicts that Pokémon were conscripted to fight. The city's leaders chose sides rather than maintaining neutrality."
"What happened?"
"'The Guardian withdrew when blood stained waters that peace had purified. The deep places became grave for those who forgot why balance mattered.'"
"Lugia sank the city."
"Lugia withdrew protection. The city sank because the construction required that protection to remain stable." Kiyomi's expression held sadness that academic distance couldn't entirely mask. "Punishment for forgetting harmony."
The theme connected to everything they'd learned, Thunder Shrine, Mt. Moon, the destroyed ruins. Partnership required respect. Lose respect, lose partnership.
"Same lesson everywhere," Miyuki observed quietly.
"Because it's the only lesson that ultimately matters."
The sealed chamber existed in the temple's deepest accessible section.
Time had nearly claimed the space, collapsed sections limiting access to narrow passages that required careful navigation. But something within called to Miyuki's medical instincts.
"Energy signature," she said, pressing forward despite the confined space. "Weak but present. Something's alive in there."
"After a thousand years?"
"Some Pokémon can survive extended dormancy. But this one, " She paused, focusing on what her training allowed her to perceive. "It's not healthy. Whatever's kept it alive is failing."
The chamber opened into a small space dominated by a single object.
An ancient Pokéball rested on a stone pedestal, not the modern design they carried, but something primitive. Wooden frame with stone reinforcement. Sealing mechanisms that predated contemporary technology by centuries.
"It contains a Pokémon," Kiyomi confirmed, examining the artifact. "The seal is weakening. Energy leakage suggests the occupant has been trapped since the city sank."
"Trapped and dying slowly," Miyuki added. "I can feel it. Fading over centuries, unable to escape, unable to fully expire."
"We should open it."
The risk was obvious.
Unknown Pokémon from an unknown era, weakened but potentially dangerous. The sealed creature might emerge hostile, might attack before they could respond.
But leaving it to continue suffering was unacceptable.
"Do it carefully," Sasuke decided. "Blastoise is ready if something goes wrong."
Kiyomi manipulated the ancient sealing mechanism with archaeological precision. Stone shifted against wood. Energy that had been contained for millennia began escaping.
Light burst from the opening seal, brilliant white that forced them to shield their eyes.
And then the Pokémon emerged.
Relicanth.
The ancient fish Pokémon materialized with form that barely maintained coherence. Rock/Water typing was evident in scales that seemed more stone than organic, in fins that moved with geological slowness.
It was dying.
Centuries of confinement had depleted reserves that should have sustained it indefinitely. Whatever purpose had driven it into the Pokéball had kept it alive far longer than natural, but that time was ending.
Miyuki moved without hesitation.
"Emergency care protocols," she murmured, producing supplies from her medical kit. "Energy restoration first. Then nutrition. Then assessment."
Her hands worked with precision that professional training had made instinctive. Potions specifically designed for Water-types. Revival compounds that targeted cellular depletion. Gentle handling that communicated safety despite the urgency.
Relicanth's eyes, ancient, knowing, weary, focused on the human tending to it.
Gratitude.
The impression came without words, weak psychic ability that the species possessed communicating across barriers that speech couldn't bridge.
"You're safe now," Miyuki promised. "Just rest. Let me help."
The visions came as Relicanth stabilized.
Images transmitted through the same psychic connection, memories that the ancient Pokémon chose to share with those who had rescued it.
The city in its glory. Humans and Pokémon walking together through streets now underwater. Markets where trade occurred between species as easily as between humans. Festivals celebrating partnerships that both sides cherished.
Then war. Soldiers forcing Pokémon into battles they wanted no part of. Leaders choosing conflict over harmony. The gradual corruption of everything the city had been built to maintain.
And finally Relicanth sealing itself in the ancient Pokéball, hoping that someday, someone would find it. Someone who might carry warning to future generations.
Mission complete.
The impression carried relief that centuries of waiting had finally ended.
Can rest now.
"You can rest," Miyuki agreed. "Or you can come with us. Travel to places this city never saw. Experience the world that exists now."
Relicanth's ancient eyes studied her, evaluating in ways that modern Pokémon rarely demonstrated.
Why?
"Because you've been alone for a thousand years. Because you survived for a purpose that matters. Because..." Miyuki's voice softened. "Because no one should have to suffer like you did. And I want to help make sure your suffering meant something."
The decision came without additional deliberation.
Relicanth pressed its ancient form against Miyuki's hand, the gesture of partnership that transcended eras.
Stay.
"Tide's returning!" Kasumi's warning cut through the moment's tenderness.
Waters that had withdrawn were beginning to reclaim their territory. The two-hour window was closing.
"Grab what you can!" Kiyomi gathered final artifacts, tablets, small carvings, anything that could be carried quickly. "We need to move!"
The ascent required speed that the descent hadn't. Waters rose around them, structures beginning to disappear beneath returning waves. Mega Blastoise created currents that accelerated their movement while protecting against the tide's force.
They emerged onto the beach as the last structures vanished.
The ruins returned to their underwater isolation, inaccessible again for months, perhaps longer depending on tidal patterns.
"Perfect timing," Sasuke observed, checking that everyone had made it safely.
"Perfect expedition," Kiyomi corrected, cradling artifacts that would take months to properly analyze. "Everything we found, the temple, the tablets, the history, it confirms patterns we've been tracking."
"And Miyuki has a new partner."
The words drew everyone's attention to the ancient Relicanth floating in the portable tank Miyuki had improvised.
"Not a partner," Miyuki said quietly. "A friend. One who chose me because I showed mercy when it would have been easier to leave."
The distinction mattered.
Some bonds came from battle. Others from training. This one came from simple kindness extended to a being that had waited a thousand years for someone to care.
Relicanth had found its rest.
And Miyuki had found something unexpected: proof that her calling extended beyond medical treatment into territories that mercy alone could navigate.
The coastal road continued northward.
Saffron grew closer.
And the group carried lessons from an underwater city that the surface world had forgotten, lessons about partnership, about respect, about what happened when harmony was abandoned.