Red targeting lines scorched the vault floor in a synchronized pattern, forcing Leo to haul Sierra upward by her forearm.
They broke apart simultaneously, dodging as concentrated thermal blasts melted the ceramic tiles where they had fallen seconds before.
"What is the tactical retreat route, handsome?" she called out, already weaving with fluid momentum across the ruined chamber.
"We take the emergency stairwell to the roof," he answered, angling the Null Razor to deflect a persistent volley of scanner beams.
"Naturally, following a cat burglar into the clouds!" she laughed, somersaulting beneath an incoming lance with practiced grace.
Retractable filaments hissed from her sleeves on high-speed spools, uncoiling monomolecular tethers tipped with weighted grappling claws.
The first defense drone crossing her path fractured into four pieces, tumbling across the floor in showers of bright static.
Leo engaged the automated sentries, swinging the broad Null Razor to catch the converging streams of laser fire.
The weapon’s absorption matrix drank seventy percent of the thermal output, channeling the siphoned force into his core conduits.
He whipped the blade forward in an explosive arc, discharging double the captured energy to vaporize two turrets and an acoustic sensor.
"You siphon raw heat," she noted with a breathless laugh, carving through another airborne machine with a flick of her wrist.
"That is delightfully unfair, while I have to rely on acrobatic skill to stay alive."
"Fewer complaints, more running," he replied, kicking open the reinforced fire exit with a concentrated pulse of shadow ether.
They fought their way up the stairwell like a coordinated storm, clearing ambush squads on every landing with seamless teamwork.
At Sub-Level 2, her lines severed the door turrets while he absorbed a laser volley aimed at her exposed spine.
He redirected the captured force into a devastating reverse slash, destroying three attack drones hovering above the landing.
By the time they reached the twentieth floor, the corporate mainframe had activated lethal lockdown across the entire skyscraper.
Office corridors plunged into darkness as combat droids deployed in squads, turning the open cubicles into a labyrinth of crossfire.
They fought through the executive gymnasium, where her wire-work intersected with his sword strikes in a synchronized display of violence.
"Thirtieth floor reached!" she shouted, kicking a copier frame loose to use as a temporary ballistic barrier against incoming plasma.
"Remind me why we avoided the basement delivery tunnels?"
"Because their entire containment battalion is currently massing near the loading docks," he countered, shouting over the blistering drone engines.
"Fair point, handsome, but I still prefer gravity on my side!" she yelled back with a brilliant, fearless grin.
A natural combat rhythm developed between them without either of them needing to speak a single word of instruction.
She drew the automated fire with agile leaps across desk partitions, while he absorbed the plasma blasts and returned concussive counters.
Back to back in the ruined offices, they dismantled squad formations while trading breathless banter like longtime underworld partners.
"Drone behind you, high angle!" she warned, ducking beneath a thermal blast that severed a row of ceiling fixtures.
"Already absorbed," he answered, destroying the machine with a single backhand sweep before pointing toward the exit.
"Skyline observation deck is just ahead!"
They burst through the double doors onto the fortieth-floor terrace, and the security partition welded shut behind them.
The rooftop terrace was an open expanse of stone and biting wind, with the entire neon sprawl of District 6 shimmering below.
Defense droids rose over the perimeter parapets on all four sides, locking their red guidance lasers into an inescapable perimeter.
With forty stories of empty air behind them and a wall of automated rifles ahead, there was nowhere left to run on foot.
"Forty stories down," Sierra said, catching her breath while balancing on the balls of her feet at the edge of the parapet.
"Tell me you brought an emergency line in that mysterious spatial pouch of yours, handsome."
"No line," he answered calmly, watching the advancing droids as shadow ether gathered along his soles.
"Amateurs," she laughed with reckless joy, gripping his jacket lapels with both hands as she leaned over the void.
"Hold on to something you value, darling!"
She leaned backward and pulled him over the ledge, plunging off the forty-story skyscraper into the open night sky.
The rush of wind roared in his ears during the first second of exhilarating freefall, watching the city lights streak upward like comets.
"If you drop me, I am haunting your spatial pouch forever!" she screamed into the gale with pure delight.
Her right arm whipped outward, and a monomolecular tether hissed from her wrist spool, launching toward a distant monorail pylon.
The claw bit into the stone support with unyielding grip, transforming their vertical fall into a sweeping arc across the skyline.
They soared over the neon canyons of District 6, the draft flattening his hood while her toned body pressed flush against his ribs.
The lockbox remained strapped securely between them, vibrating in harmony with the All-Spark pulsing behind his sternum.
She laughed into the rushing air, and he found himself grinning as they swung above the luminous corporate avenues.
The tether unlatched at the peak of their trajectory, launching them toward a secluded maintenance terrace hidden behind a holographic billboard.
She rolled across the rooftop surface to bleed off their momentum, and they came to a halt in the quiet shade of the display.
She rolled onto her back, staring up at the flashing advertisements with a breathless, triumphant laugh.
"Forty stories survived," she murmured, her eyes sparkling with adrenaline as she pushed dark bangs from her flushed forehead.
"I have never jumped off a skyscraper with a partner who weighed more than the stolen haul."
"Very romantic," he noted with a dry smirk, sitting up beside her on the rooftop to steady his breathing.
"Romance comes after we examine the prize," she countered, sitting up and unlatching the lockbox with practiced, nimble fingers.
The lid clicked open, revealing an ancient crystal fragment the length of a hunting dagger, veined with glowing golden circuits.
The All-Spark flared behind his sternum, and the gold resonance thread inside his chest pulled toward the artifact with intense hunger.
[ Genesis Signal Compatibility: 15% -> 62% ]
[ Object Identified: Genesis Shard 1 Of 7 ]
[ Warning: Absorption Will Trigger Weapon Evolution ]
The crystal radiated cosmic warmth that illuminated her face as she stared down at the stolen artifact in genuine wonder.
"My buyer promised nine hundred thousand credits for this box, sight unseen," she murmured, tracing the edge of the container with awe.
She turned her gaze toward him, resting a manicured fingernail against the glowing violet brand visible at his open collar.
"Make me a better offer, mystery man," she whispered playfully, her eyes locking onto his face with deep curiosity.
"Because your chest is putting on a display, and I want to know who taught a slum ghost to move like an apex predator."
The All-Spark flared with blinding radiance, and the Genesis Shard answered the call, glowing brilliant amber in the night air.
"Stand back," he said, reaching his bare palm toward the cosmic crystal to initiate the next stage of power.