The maw closed. Not with a crunch, but a sickening squelch, like a hundred waterlogged sacks of viscera collapsing. Darkness swallowed Kassur whole, absolute and immediate, smelling of sulfur, salt, and rotten kelp. He was truly inside the guts of the sea titan. The pressure was immediate, a thousand fathoms of ocean squeezing his impaled shoulder, his cracked ribs, his very lungs. Acid began to bloom against his skin, a burning bloom that promised to strip flesh from bone in minutes. But Kassur, even impaled, even choking, felt a cold, familiar anger. Not at the monster, but at himself for the slip, for the moment of raw panic. He wouldn't die like this. Not after turning the commander to cinder, not with Nia's arm rotting away back home. “Lurk! Now, you miserable blob of anxiety!” he rasped, the syllables choking on bile. “Pull me together!” From his torn shoulder, a knot of living umbra erupted. It wasn't the beast's usual supple ripple, but a gnarled, obsidian mass writhing with faint violet luminescence. It wound over him, a tight carapace reacting to the brute bio-signature of the titan. The acid hissed against the umbral shell, gnawing at its edges, but for now, it held. “Good boy,” Kassur coughed, tasting bile and metallic tang. “Now, where’s the damn heart?” [Ereshkigal-Echo: Host health critical. Cellular integrity failing. Recommended action: rapid egress.] “Egress? I’m looking for real estate,” Kassur retorted, his voice thin. “The main office. The boss's boiler room.” The shell contracted, crushing his cracked ribs. Pain flared through his shoulder, tearing through the haze of the beast's protective field. Something gave way in his skull, an abrupt crack in his thoughts. Fractured scenes flashed: sterile labs, bubbling vats, and a face identical to his own, only rigid, gaze flat as flint. *“The cleansing must proceed,”* the other Kassur’s voice echoed, devoid of his usual jests. *“Akkadia Prime is a cancer. The spores are the cure.”* The words ripped through him, raw and undeniable. He saw himself, *his* past self, standing before a vast, churning ocean of green, holding a single, antique revolver. That colder twin prepared a chrome cylinder, hands methodical and level. *“This iteration, Kassur Zinn, will forget,”* the past self stated, turning the revolver over in his hand. *“He will be given a chance. A chance to use this power not to purge, but to preserve. To turn the tide against what I have wrought.”* The past twin triggered the cylinder. A hard flash left an empty ditch where years belonged, an amputated life. His necromancy had been tailored for this: not submission to the swarm, but turning their own dead into weapons. The terror, the gnawing dread of being a monster, receded, replaced by a cold, sharp clarity. He wasn't the one who created the spores. He was the one who was meant to undo it. The enforcer commander's broadcasts had fed a manufactured lie, a script laid out to shove him forward. A sick joke, but effective. “Right,” Kassur breathed, a new kind of calm settling over him. “Time to fix my own damn mess.” The shell rippled as digestive fluids chewed into the outer crust. Guided by newly surfaced instinct, Kassur shoved his will into the bond. Lurk dug into the brute's inner walls, turning the shroud into a boring auger that ripped through muscle and gristle. They tunneled, a nightmare slug of shadow and pain, through vascular networks that pulsed like subterranean rivers. Viscera thrummed like massive industrial pistons. It had been enslaved by the dead commander's spinal tap, warped into an engine of ruin. Then the bore punched into an open vault lined with pulsating green membranes. Suspended by arterial trunks as thick as grease-pipes, an enormous organ thumped with the cadence of a hydraulic stamp: the creature's core. It looked like a bruised moon, radiating an oppressive biotic energy that made Kassur's teeth ache. [Ereshkigal-Echo: Proximity to Tiamat-Class Leviathan bio-core confirmed. Target: Vulnerable.] “Vulnerable, huh?” Kassur peeled back the umbral skin around his right wrist. He drew his pistol, copper cylinder cold against his palm. One brass cartridge in the center was all he had left. He tracked the feeder trunks where black veins pooled. Violet soot bled down the barrel, infusing the lone round with Lurk's stolen blight. “Time to punch a hole in your chest, big guy,” Kassur muttered. The words were for the leviathan, but also for himself, for the ghost of the old Kassur, and for the promise of the new. He squeezed the trigger. The cylinder kicked. The shot sounded like a muffled whipcrack inside the damp cavern, but the projectile tore through the primary valve in a violet flare. Phosphor on the walls guttered. The titanic thrumming stuttered, then slowly, agonizingly, faded. The colossal bulk seized. Spasm after spasm hammered through the meat, grinding Kassur against slumping bulkheads before the tissue went slack. The acid drained through ruptured sluices, and the hum died. [Ereshkigal-Echo: Tiamat-Class Leviathan defeated. Resurrect as mount? Y/N.] Kassur didn’t hesitate. He knew what he had to do. Knew what he *would* do. For Nia. For humanity. He pressed a bloodied thumb against the 'Y'. Far above, the oily surf parted. Zadira, crouched on a shattered dock pile, tracked a sapphire swell rising through the greasy brine. With a groan that shook the pier footings, the horned skull of the Tiamat-Class titan breached the water. Its unlidded yellow eyes flared anew, twin beacons burning with cobalt necromantic fire.

Belly of the Beast