Ren and Shakky arrived at a massive deserted island deep within the New World, far from established routes and beyond the reach of casual patrols. Jagged mountains tore into the sky, dense forests covered most of the land, and the shoreline was littered with broken remains of ships that had misjudged the currents.
It was wild.
It was dangerous.
It was perfect.
"This place feels like it wants to kill us," Shakky said lightly as she stepped off the coated vessel and surveyed the terrain.
Ren rolled his shoulders slowly.
"Good."
She glanced at him.
"You're serious."
"Yes."
The air itself felt heavier in the New World, as if ambition and violence had soaked into the wind. Even the beasts roaming the island carried an unnatural ferocity, their roars echoing from deep within the jungle.
Ren walked toward the treeline without hesitation.
"I'm starting today."
"You just got here," Shakky replied.
"That's why."
She watched him disappear into the forest with a faint smile.
"Don't die. That would be inconvenient."
---
The first tree shattered in a single punch.
Ren didn't use Haki.
He didn't transform.
He simply struck.
Wood exploded outward, fragments scattering across the clearing as the shockwave rippled through nearby trunks. Birds erupted into the sky in alarm.
He exhaled.
Again.
Punch.
Kick.
Elbow.
He moved relentlessly, striking trees, boulders, and eventually the base of a small cliff. Each blow sent tremors through the earth. Each impact tested the limits of his raw physical strength.
By the third day, the forest floor around his training ground looked like a battlefield.
By the seventh, the mountain itself bore cracks.
"You're going to flatten the island," Shakky remarked one afternoon as she leaned against a tree, arms crossed.
"It's sturdy," Ren replied between strikes.
"That wasn't reassurance."
He didn't slow down.
Beasts eventually began approaching, drawn by the sound of destruction. Massive reptilian creatures with plated hides. Fanged mammals larger than houses. Winged predators circling above.
Ren welcomed them.
One lunged at him from the side.
He ducked beneath its jaws and drove his fist into its ribcage. The impact echoed like cannon fire. The beast skidded across the dirt, stunned but not dead.
"Good," Ren muttered. "You're tougher than trees."
The creature roared and charged again.
Ren partially transformed—fox ears rising, claws forming at his fingertips. He met the charge head-on, grappling with the beast and flipping it over his shoulder.
"Again."
The beast attacked repeatedly, but Ren refused to use overwhelming force. He allowed himself to be struck, testing durability, forcing adaptation.
Shakky watched from a distance.
"You're smiling," she called out.
"I am."
"That's disturbing."
---
Weeks passed.
Then months.
Ren trained relentlessly beneath the blazing sun. One afternoon, exhausted and bloodied from a prolonged fight with three armored beasts, he noticed something unusual.
His wounds were closing faster.
Not just slightly.
Noticeably.
He stood still, observing the warmth of sunlight against his skin.
"…That's new."
He shifted fully into his Solar Kitsune form.
Golden fur shimmered faintly. Heat radiated from his body like a contained star. The sunlight felt heavier now—not oppressive, but empowering.
A deep cut along his shoulder sealed within seconds.
Ren blinked.
"Well… did I become Superman?" he joked to himself, staring at his own hands.
He tested it immediately.
He leapt toward a cliff face and drove his fist into solid rock. The explosion of debris was larger than before. The recoil hurt less. His muscles felt denser, more alive.
"So under the sun… higher regeneration. Increased growth."
He grinned slightly.
"That's broken."
---
That night, beneath a silver moon hanging over the island, Ren tested something else.
He shifted forms again.
Lunar Kitsune.
His fur turned pale, almost luminescent. His eyes glowed faintly blue. The air around him cooled subtly, the ground frosting under his bare feet.
He waited.
A self-inflicted cut across his palm healed almost instantly.
Faster than daytime.
His senses sharpened drastically. Every sound carried farther. Every movement in the forest felt exaggerated in clarity.
"Faster growth… faster regeneration."
He tilted his head toward the moon.
"So the sun strengthens one side. The moon strengthens the other."
He laughed softly.
"That's not fair."
---
From that day forward, Ren structured his life around celestial cycles.
He trained under the sun in Solar Kitsune form, pushing his physical limits until muscles screamed. At night, he refined speed, senses, and regeneration in Lunar Kitsune form.
He slept at noon, when both influences felt neutral.
Shakky, meanwhile, trained in her own way. Her style was grounded, precise, experienced. She sparred with Ren occasionally but refused to indulge his full strength.
"I'm not your punching bag," she reminded him after one particularly intense exchange.
"You dodge well."
"Of course I do."
---
Shakky was also responsible for hunting and cooking.
One evening, as she skewered meat over an open fire, she glanced toward Ren, who was still shadowboxing in Lunar form.
"You really are something, Ren," she said. "Making me do the hunting and cooking."
Ren stopped mid-strike.
"You volunteered."
She smirked.
"You should know I was the girl monsters fought to impress."
Her tone was teasing, but there was history in it.
Ren snorted softly.
"Well, you aren't complaining about it."
"I might start."
He walked closer, wiping sweat from his neck.
"And please," he added with a faint smirk, "those same monsters didn't care about you when you needed them."
Shakky's mouth twitched.
"Well, forget it."
She stood and brought the food over.
Ren sat cross-legged, hunger obvious.
The moment he took the first bite, his eyes brightened.
"No matter how much I eat, it's still the best."
"Ara," Shakky replied smoothly, "thanks for the flattery."
She leaned forward casually and plucked a grain of rice from his lips with her fingers.
Then she ate it slowly, deliberately, maintaining eye contact in a blatantly seductive pose.
Ren froze.
His face turned red almost instantly.
"I told you to stop that," he said, voice strained between embarrassment and seriousness. "Or don't blame me if I take that flirting as a signal to do something."
Shakky blinked.
Then she leaned back.
"Tsk. You're not fun."
"I'm serious."
"I know."
She smiled knowingly.
"That's why it's fun."
Ren looked away, flustered.
"You're impossible."
"And yet," she replied lightly, "you haven't asked me to leave."
He had no answer to that.
---
Months passed in a rhythm of destruction and quiet evenings.
Ren's strikes began splitting hillsides.
His speed at night blurred his form entirely.
His regeneration under both celestial influences grew frighteningly efficient. Bones mended in hours. Deep gashes closed in moments.
One afternoon, after obliterating a massive boulder with a single Solar-enhanced punch, he stood amid the dust cloud and examined his hand.
No tremor.
No injury.
"I've adapted."
Shakky approached slowly.
"You're changing."
"I know."
"Not just stronger," she added.
Ren looked at her.
"Different."
He didn't deny it.
The New World demanded evolution. Stagnation meant death. He had no intention of stagnating.
That night, as moonlight bathed the island, Ren stood atop the highest peak. The wind tore at his clothes, and the sea roared below.
Shakky joined him quietly.
"You've been pushing yourself nonstop," she said.
"I need to."
"For what?"
Ren looked toward the distant horizon.
"For what comes next."
She studied him carefully.
"You still thinking about Fish-Man Island?"
"Yes."
"And Mary Geoise?"
His silence answered her.
Shakky exhaled slowly.
"You're walking toward storms."
Ren's Lunar eyes glowed faintly.
"I know."
"And you're okay with that?"
He smiled faintly.
"I'm not walking into them."
He looked up at the moon.
"I'm becoming one."
Shakky watched him in silence, something unreadable flickering in her gaze.
"You really are dangerous," she murmured.
Ren didn't reply.
Below them, the island bore scars of his growth.
Above them, the sun and moon continued their eternal cycle.
And Ren adapted to both.