The Chimera filled the alley from wall to wall.

It had no baseline shape to call wrong. Skulls fused into overlapping plates across a torso that widened at the top and split into a cluster of limbs, each one terminating differently, a knot of snapping metacarpals on the left, a fused vertebrae club on the right, a jaw mounted sideways on the forearm, the teeth still intact and clicking.

The scaffolding of fused spines ran across its back and shoulders, locking and unlocking as it redistributed weight, grinding calcium against calcium with a low continuous sound that sat in the chest rather than the ears. The smell hit before the sound did, calcium baked in summer heat, with something rotting underneath at the junction where bone met older bone.

"Ash meet the Ossuarium Chimera. Chimera, Ash."

"What the hell is wrong with you." Ash yelled out. "This monster can wipe out a city and you’re doing character introductions."

It knew they were there. The skull-plates rotated across its torso, each socket housing a different eye, compound and black, tracking both of them simultaneously.

"Tch. It’s changed."

"How?"

"Looks like it got an upgrade to its defenses. Follow my lead."

Vivian moved first.

She closed half the distance on a diagonal. The skull-plates tracked her. She cut hard right; they swiveled. She snapped back left without breaking stride and threw two fingers up toward Ash.

Ash took the right flank at the same moment she committed left. The skull-plates snapped into a new alignment, thirty compound eyes locking onto Ash’s throat before his boot even hit the gravel.

A femur erupted from the Chimera’s right shoulder mass, three feet of dense bone sharpened to a point, extruding at full extension before Ash had processed the movement. It swung in a downward arc aimed at his collarbone.

Ash slammed a gravity field onto the bone mid-swing. The air warped. The femur plummeted with the sudden multiplied mass tearing the Chimera’s shoulder joint downward with it, the sharpened tip burying itself into the alley wall and blowing the brickwork into red dust and shrapnel. Ash was already sideways when the cloud hit, the grit stinging across his cheek.

The femur wrenched free from the wall and swung back up. Already regrowing where the tip had chipped against brick, calcium knitting over the damage while the arc was still completing.

Ash put another gravity field on it and the bone lurched again, shoulder joint dragged down a second time. He dropped the field the moment it hit the wall and repositioned. The metabolic cost of two fields in rapid succession settled in his chest, a pressure that tightened his next breath.

From the chest: a burst erupted. A dozen bone-splinters fired outward from the sternum in a spread, shotgun-wide. Ash took three across the left shoulder before Tyrant’s Frame absorbed the rest of the momentum. Three jagged calcium spikes jutting from his upper arm and bicep, the impact pulverizing the muscle beneath. Hot blood welled around each one. He tried to rotate his wrist, but the muscle felt like it had been replaced with hot lead. The splintered bone grated against his own, sending a sickening flare of heat straight to his elbow.

He had an idea.

Ash brought the cold hunger of Willis’s room into his palm. He pressed it against the bone-splinter jutting from his bicep. He waited for the ivory to gray and powder, but it slid off the surface like water off glass. The calcium was too dense, too alien. There was no "rot" to be found in the mineral structure of the Chimera’s armor. It was a mismatch of keys.

He gripped the bone-splinter and tore it from his bicep.

Vivian went for the left side while the Chimera’s attention was split, her katana angled for the junction between two skull-plates near the upper torso. The blade hit the seam and skittered across the inner curve of the plate, sparks sheeting across her forearms. The vibration traveled straight up both wrists. She didn’t reset. She used the recoil to snap the blade in a tight arc, driving the edge two inches lower into the next seam candidate.

The blade seated. She felt resistance and put both hands behind it, torquing the edge against the junction.

The Chimera’s whole mass rotated toward her. The skull-plates realigned, bringing heavier overlapping coverage to the left side, burying the seam under two fresh layers of ivory plating.

The vertebrae club came across in a horizontal sweep, catching her left forearm and driving her sideways into the wall. She hit brick shoulder-first, peeled off, landing on her feet. The club rose again for a downward strike. She rolled across the alley floor below its arc, the tip cracking the concrete where she’d been, and rose on the other side of the sweep with the katana back in guard.

The jaw-limb swung toward her face, the one mounted sideways on the forearm, teeth clicking rapidly in the half-second before contact. She dropped below it, felt the teeth rake across the top of her hair, and came back up inside the swing’s radius. Too close to the Chimera now. The metacarpal-knot on the left limb raked across her ribs before she got clear, three fingers of fused bone dragging across the fabric of her shirt and leaving red lines beneath.

She stepped back to distance.

"Left collarbone," she called, breathing controlled. "It’s protecting it."

Ash looked up. Three skull-plates in a triangular arrangement at the left collarbone junction, each slightly larger than the surrounding plating. Extra layers, extra coverage. He put a gravity field on the triangle at three times baseline and the Chimera’s left side lurched downward, the three plates grinding against each other under the load, their realignment slowed.

"Whatever you’re doing keep it up!" Vivian yelled taking a leap into the air.

Vivian drove the katana into the seam below the triangle from a steep angle.

The blade found bone beneath the ivory plating. She drove with both hands. The bone finally chipped. The crack rang off the alley walls and a white fragment of it spun to the ground.

A concentrated sulfur-yellow exhalation hissed from the fracture, rising along the heated surface of the Chimera’s mass. Vivian was already pulling back. Ash was already further from that side of the alley. The gas hit the left wall and the mortar between two brick courses went dark, then gray-white, powdering at the edges where the exhalation touched it.

Vivian looked at the wall. "Don’t breathe near the cracks."

"Good call" Ash said bringing his shirt up to protect his nose.

The chip site sank inward as new bone pushed up from below, overlaying the fracture in rough, fast calcium. It was a different density than the original plating, the surface broken by raw extrusion. The triangle arrangement had loosened.

The Chimera reached for her.

Too-many-jointed fingers clamped around her right forearm like a vice. Bone ground against her bracer. Before it could rip her forward, she dropped her center of gravity, planted a heel against its grinding sternum, and wrenched her shoulder back with everything she had. Joints popped. She tore free, stumbling two steps back, her shoulder socket screaming.

She brought the arm up. Testing her full range of motion. The shoulder moved with a half-second lag she hadn’t had before. She adjusted her grip to lead with the elbow, let the shoulder do less of the work. She didn’t look at the arm again.

"I’m still in it," she said, "And you?"

"Yeah, I’m here," Ash said.

The Chimera shifted its full mass toward her. The scaffolding along its back locked and redistributed, the grinding peaking as it brought its weight to the left side where she’d found the seam. Fresh skull-plates slid into position over the collarbone region. Three extrusions extended from the right side, femur-length, locking in formation, already angling toward Ash as he moved to keep the Chimera’s attention split.

Vivian stopped moving.

The Chimera held. The grinding settled to a low frequency, mass stable, tracking both of them.

She looked at the right-side wall. At the left collarbone region. It was rough from the first fracture, still seeping yellow in a thin trail, the new growth uneven, the triangle arrangement looser than before.

"The rough patch," she said. "I need thirty seconds on that side without the limbs."

Ash looked at the three femur extrusions and the rib-burst cluster in formation on the right side, all of them already tracking his movement.

"I can do that" he called out.

He put an increase gravity field on all four simultaneously.

The cost landed in his chest like a fist. Four concurrent fields tore at his metabolic reserves. The pressure seized his lungs, reducing his next breath to a shallow gasp. The four extrusions lurched, weighted, their arcs dropping. He held it. The pressure spiked. He kept holding it.

And Vivian moved left.