Work Text:
The Third Great Shinobi War had ended five months ago, and Konoha was still licking its wounds. Most shinobi were grateful just to be alive. Ren Nara, however, had woken up in this world with a very different mindset.
He had arrived in the body of a seventeen-year-old Nara chūnin who’d taken a kunai to the throat during the war’s final days. The original owner was dead; Ren was not. He kept the name, the clan tattoos, the shadow-manipulation affinity, and the infamous Nara laziness. Everything else—memories of asphalt highways, air conditioning, heated seats—was his alone.
Within weeks he’d quietly bought an abandoned apartment complex on the edge of the village, paid for with war spoils and a few discreet shadow-clone-assisted gambling wins. He turned the basement into a workshop. Then he built two cars.
The first was a Bentley Flying Spur—sleek, black, aristocratic. The second was a Mercedes G-Wagon—boxy, brutal, unapologetic. Neither ran on gasoline. Both were powered by chakra coils he’d painstakingly etched into the frame and engine block. Ignition required a drop of blood on the door handle (a simple blood seal) and a pulse of lightning chakra to wake the circuits. The rest was fuinjutsu ingenuity: compressed wind-style seals for propulsion, earth-style for suspension, fire-style for heat management. Top speed hovered around 180 km/h on open road. They were quiet, smooth, and smelled faintly of cedar incense when the climate control kicked in.
Ren had forgotten one crucial detail: this was not the modern world.
Three weeks after completing the G-Wagon he took it for a test drive at 4 a.m., windows down, AC blasting cool air across his face. He made it exactly four blocks before three ANBU appeared on the rooftops.
“Stop the… carriage,” the squad leader ordered.
Ren blinked. “It’s a car.”
They stared at the matte-black beast idling beneath him. No horses. No visible seals on the outside. Just glass, metal, and the low purr of chakra cycling through hidden conduits.
The Yamanaka on the team didn’t ask permission. He slipped into Ren’s mind like a kunai through paper.
What he found was confusing.
Images of highways stretching forever, neon signs, gasoline stations, traffic jams, drive-thrus. A life where people rode in metal boxes that moved without chakra beasts or summons. No jutsu signatures. No hand seals. Just… engineering.
The Yamanaka surfaced, pale. “He’s not lying. He believes this is normal. But there’s no crime here. It’s just… incomprehensible.”
The ANBU captain rubbed his mask. “We’re calling it a carriage until further notice. You’re free to go, Nara. But next time, warn someone before you unleash a civilian-transporting summon.”
Ren drove home slowly, windows up, and decided to keep a lower profile.
That lasted until the Hokage summoned him.
Hiruzen Sarutobi sat behind his desk, pipe in hand. “The Fire Daimyō has requested a diplomatic escort. You, Asuma Sarutobi, Kurenai Yūhi, and Kakashi Hatake will accompany the envoy to the capital. Standard C-rank with potential for escalation.”
Ren slouched in the chair. “Can we take my carriage?”
Hiruzen raised an eyebrow. “Your… carriage.”
“The black one. Bentley. It’s faster than horses, climate-controlled, and I already have the route planned.”
The Third exhaled smoke. “Approved. But if it explodes, I’m blaming you.”
...
Asuma, Kurenai, and Kakashi met Ren outside the Hokage Tower at dawn.
Asuma stared at the Flying Spur. “That’s… bigger than I expected.”
Kurenai tilted her head. “It has windows all the way around. Like a noble’s palanquin, but metal.”
Kakashi’s visible eye crinkled. “I’m more interested in whether it has leg room.”
Ren opened the rear doors with a pulse of lightning chakra. The interior lights—soft blue LEDs—flickered on. The seats were leather, heated, and massaging. The AC immediately dropped the temperature by ten degrees.
Kurenai stepped inside first. A cool breeze brushed her face. She closed her eyes. “This is divine.”
Asuma followed, mostly because Kurenai looked happy. He sank into the seat and muttered, “It’s… comfortable.”
Kakashi slid in last, mask still in place. Ren activated the massage function from the driver’s panel. Kakashi’s shoulders slumped almost immediately.
“…I’m never leaving this car.”
They picked up Kakashi last—he’d been late, as usual—and drove straight to Ren’s apartment complex to load supplies. The jonin watched in stunned silence as Ren parallel-parked the Bentley in a space barely wide enough for a cart.
Inside the complex, Ren showed them the garage. The G-Wagon sat beside a half-finished project: a silver Nissan Silvia S13 with widebody kit, a Toyota GT86 also widebody, a red Ferrari 488, and a custom hybrid G-Wagon/Jeep Wrangler that screamed Might Guy.
“These are for you,” Ren said casually. “If the Daimyō likes the Bentley enough, I’ll make more.”
Asuma choked on his cigarette. “You’re giving us these?”
“After the mission. Assuming I don’t die of boredom first.”
The trip to the capital took one day instead of three. The Daimyō’s courtiers nearly fainted when the black carriage rolled silently through the gates without horses. Ren parked in the courtyard, opened the doors, and let the cool air spill out.
The Daimyō himself descended the steps, eyes wide. “This is sorcery.”
“Nope,” Ren replied. “Just engineering. Give me noble status and three million ryō seed money, and I can make one for every daimyō family in the Land of Fire. Luxury transport. No maintenance. Chakra-powered. Indestructible unless someone uses an S-rank jutsu on it.”
The Daimyō stared for a long moment.
“Done.”
...
Two weeks later, back in Konoha, the jonin were losing their minds.
Kakashi sat in his silver Silvia, hands on the wheel, staring at the gearshift like it had personally offended him.
“How do I make it go backward?”
Ren leaned against the doorframe. “Foot on the brake, pull the lever down to R, ease off the brake. Also, don’t floor it in reverse. You’ll spin out.”
Asuma was already in his GT86, engine growling. He’d figured out the clutch (barely) but kept stalling. “This stick thing is evil.”
“It’s a manual transmission. You’ll get used to it. Or cry trying.”
Kurenai’s Ferrari purred like a contented cat. She had the windows down, AC on full, cool breeze playing with her hair. She looked serene. “I love this car.”
Might Guy burst into the garage, arms windmilling. “MY VEHICLE IS A BEAST OF YOUTHFUL POWER!” He climbed into the G-Wagon/Jeep hybrid, slammed the door, and immediately hit the shrink seal Ren had installed on the dashboard.
The entire vehicle folded inward with a soft whine of fuinjutsu, shrinking to the size of a large toy. Guy’s eyes bulged.
“WHAT SORCERY IS THIS?!”
“Shrink feature,” Ren said. “For storage. Tap the seal again to restore. Don’t do it while you’re inside.”
Guy did it anyway. The car expanded violently, flinging him onto the hood. He gave a thumbs-up from the ground. “MAGNIFICENT!”
Kakashi, meanwhile, had discovered the LED interior lights. He cycled through red, blue, purple, green. “This is distracting in the best way.”
Ren showed them the rest: speedometer that glowed at night, headlights that cut through fog like kunai, reclining seats that turned the back into a bed, trunk space big enough to hide a small armory, and rims that changed color with a pulse of chakra.
Asuma finally got the GT86 moving without stalling. He pulled up beside Ren, grinning. “You’re insane, you know that?”
Ren shrugged. “I’m just lazy. Walking is effort. Horses are effort. These cars mean I can nap while someone else drives.”
Kakashi leaned out his window, already addicted. “I’m coming with you next time you test-drive something new.”
“Deal.”
Kurenai smiled softly from her Ferrari. “The breeze is perfect.”
Asuma glanced at her, then at Ren. “You’re dangerous, Nara.”
Ren smirked. “Only if you make me walk.”
Somewhere in the capital, the Fire Daimyō was already commissioning a second Bentley—this one gold.
Ren Nara, transmigrator, chūnin, and accidental automotive revolutionary, leaned against the wall of his garage and watched his friends bicker over gears and reverse and whether purple LEDs were “cool” or “embarrassing.”
For the first time since waking up in this world, he didn’t feel homesick.
He felt like he belonged.