Five days demanded intensity that previous preparations hadn't matched.
Landorus emerged for training with understanding that this challenge exceeded routine gym battles. The Forces of Nature member had been waiting for confrontation like this, Ground against Ground, Legend against Legend, earth itself as battlefield.
"Sacred ground," Sasuke observed as they began.
Viridian's training areas radiated energy that other locations lacked. The earth itself seemed alive, responsive to Ground-type presence in ways that normal terrain couldn't replicate.
"Feel it?" Landorus's expression suggested awareness that transcended verbal communication.
Sasuke could.
Earthquake precision became the first focus.
"Not just power," Sasuke directed. "Controlled destruction. We need to shake the enemy without destabilizing the entire arena."
Standard Earthquake affected everything, allies, opponents, terrain itself. Against Onoki's decades of experience, indiscriminate force would be countered easily.
Selective seismic force.
Landorus practiced directing tectonic energy toward specific targets. The massive power that the technique generated now channeled through concentrated zones rather than spreading universally.
"Better," Sasuke acknowledged after the tenth attempt. "Tighter. More focused."
Landorus's satisfaction communicated without words.
Earth Power added another dimension.
The technique erupted from below, ground itself becoming weapon that rose to strike. Unlike Earthquake's horizontal waves, Earth Power attacked vertically.
"Hard to dodge," Miyuki observed during analysis. "The attack comes from beneath the opponent. Standard evasion patterns don't work."
"Perfect for Ground specialist battle," Sasuke confirmed. "Onoki's Pokémon will be comfortable with seismic attacks. Earth Power attacks from unexpected angles."
Practice refined the technique's timing, eruptions that caught targets before repositioning could occur.
Miyuki's Salamence served as sparring partner.
Dragon versus Ground/Flying provided matchup that neither dominated through type advantage. Skill decided outcomes that typing left ambiguous.
"Dragon Breath!"
Salamence's attack forced Landorus into evasive patterns that combat demanded.
"Counter, Stone Edge!"
Rock-type coverage struck back, demonstrating that type chart limitations could be overcome through strategic move selection.
The sessions pushed both Pokémon to limits that casual training never approached.
"Good practice," Miyuki assessed afterward. "Salamence learned as much as Landorus."
"That's partnership," Sasuke replied.
Kasumi's contribution came through cultivation that Viridian's unique environment enabled.
"Ground-mineral berries," she explained, presenting specimens that local soil had produced. "Found only here, growing in soil that the sacred earth has enhanced."
"Properties?"
"Boost Ground-type power significantly. The minerals that make this place special are concentrated in the berries' composition."
The advantage was subtle but real, enhanced power that wouldn't appear in opponent's preparations.
Kiyomi's research revealed dimensions that combat preparation alone couldn't address.
"Was studying Onoki's history," she reported during day three's planning session. "He fought in the Great Pokémon War. Thirty years ago."
"We knew he was a veteran."
"We knew he was experienced. We didn't know the scope." Kiyomi displayed documentation that research had uncovered. "He commanded Ground-type units during the Viridian Campaign. The battles he fought, they shaped this region's history."
"What does that mean for our challenge?"
"He uses earth like weapon. Every rock, every grain of sand, the battlefield becomes army under his command. Environmental mastery that other Gym Leaders don't approach."
"How do we overcome that?"
"By not trying to match it. By offering something he hasn't seen."
Day three brought encounter that preparation couldn't have anticipated.
The sacred tower drew Sasuke during evening training, ancient structure whose purpose remained mysterious despite centuries of study. Its stone surfaces pulsed with energy that ordinary construction didn't possess.
Latios and Landorus accompanied him, both Legendaries responding to something that called from the tower's presence.
"Do you feel that?" Sasuke asked.
Both Pokémon did.
The tower glowed.
Light that shouldn't have existed spread across stone surfaces that had remained dark since before recorded history. The energy that Viridian concentrated seemed to gather, to focus, to communicate.
Vision overtook perception.
Sasuke saw the ancient past.
Pokémon and humans working together, not the partnership of trainer and team, but cooperation between equals building something neither could achieve alone.
Ground Pokémon shaped stone with precision that tools couldn't match. Massive blocks carved through earth manipulation, formed by geological processes accelerated through Pokémon capability.
Psychic Pokémon lifted those blocks with telekinetic force that muscle couldn't provide. Weight that should have been impossible to move rose smoothly through mental power.
Flying Pokémon placed the highest pieces with aerial precision. Positioning that ground-bound builders couldn't access achieved through partnership with those who commanded the sky.
The tower rose.
Monument to what cooperation could build.
Symbol of unity that the region's founding represented.
Vision ended.
Sasuke found himself kneeling before the tower, Latios and Landorus positioned protectively around him. The glow had faded, but understanding remained.
"This is why Viridian is sacred," he realized.
Not just Ground-type energy concentration.
Birthplace of human-Pokémon cooperation.
The first city, built together as equals.
Understanding transformed strategy.
"Onoki's true test," Sasuke said to his Pokémon. "It's not just power. It's not just skill."
Latios and Landorus listened with attention that exceeded typical communication.
"He wants to see partnership. Real partnership. The bond that built this tower and founded this city."
The vision had shown what mattered.
Not overwhelming force that defeated opponents.
Unity that transcended species boundaries.
"New approach," Sasuke decided during final preparation.
"Not just battle. Demonstrate unity. Human and Pokémon working as one."
"You've always done that," Miyuki observed.
"I've commanded effectively. Directed well. But the tower showed something deeper." Sasuke's expression held revelation that the vision had provided. "True partnership means there's no separation between trainer and Pokémon. One mind. One purpose. One being expressing itself through two forms."
"Can you achieve that?"
"Tomorrow will reveal whether I already have."
The final night brought readiness that training alone couldn't have built.
Landorus rested with composure that confidence provided. The Forces of Nature member understood what tomorrow demanded, not just victory, but proof of what their partnership had become.
Sasuke's mind was clear.
Seven badges had tested skill, strategy, endurance, environmental adaptation. Each had taught lessons that accumulated into something larger.
The eighth badge would test partnership itself.
Onoki, Earth Master, veteran warrior, guardian of Viridian's sacred legacy, would judge whether Sasuke understood what Pokémon training truly meant.
Tomorrow would provide the answer.
And Sasuke intended to demonstrate that his bond with Landorus exceeded anything the old master had witnessed.
Because that bond was real.
And real partnership was undefeatable.