The rootmind didn't want to let go.
Forty years of fusion, and the separation wasn't a door opening — it was a wall being dismantled from the inside, every brick a shared understanding, every brick a mutual dependency. The rootmind had been his nervous system. The World Tree had been his skeleton. Pulling away from them was the worst thing he'd ever done, and he'd died once already.
The entity waited.
It had been waiting for this. The fragment of something dimensional had spent forty years inside a human body fused to a world-tree, and it had learned patience the way mountains do — by being too large to do anything else. When the separation began, the entity offered help.
Pain management. The rootmind's disconnection produced signals that would have destroyed a human nervous system. The entity dampened them, filtered them, turned agony into something bearable.
Chris accepted. Triple-checked the dampening — was the entity redirecting pain signals, or using the access to push something else through? The dampening was clean. The entity was helping. That didn't mean it wasn't also taking something.
The World Tree let go last. It had been growing in the Barrens for centuries before he'd arrived. It hadn't asked to be fused with a dying college student. But it had held him, fed him, spread his influence across the dead ground until the dead ground lived. The disconnection was quiet. A vast presence withdrawing, leaving warmth in the spaces it vacated. Something passed between them in that withdrawal — not words, the World Tree didn't use words — more like the echo of a long conversation ending. Forty years of shared existence, and the Tree gave him one last impression: the shape of the root network in its entirety, every channel and pulse and living structure, a map of everything they'd built together. Then it withdrew, and the map was gone, and Chris was standing in soil that had been dead ground when he was nineteen years old, alone with an entity that wanted to survive.
Then he was alone in his own body. Just him and the entity.
His hands were wrong.
He raised them in front of his face. Pale. Smooth. The skin of a young man who'd never spent forty years in the sun, because he'd spent them inside a tree. The fingers were longer than he remembered. The nails had a faint green tint at the cuticles.
He pushed himself upright. The trunk behind him — his trunk, for forty years — was still warm where his back had been pressed. Bark split where his skin had fused. A line of sap ran down the wood.
His legs held. Barely. Forty years without walking and the muscles had atrophied, but the entity had been preparing for this, adjusting his body's maintenance during the sleep, keeping the tissue viable through root-network nourishment. Another thing to triple-check later.
He took a step. Then another. The ground was soft — living soil, the topsoil layer he'd watched spread across the Barrens from inside the tree. His feet pressed into it and the soil responded, rootlets shifting under his weight.
The green zone stretched in every direction. Twenty miles of living territory. He'd watched it grow through the network's perceptions — the slow expansion of root channels, the construction of living structures, the rhythm of daily life in a city built from nothing. Seeing it with his own eyes was different. Sharper. Smaller. He could see what was in front of him, not what was happening a mile away, not the shape of Sera's presence against the roots. A city of forty-one thousand people, and he could only see the hundred closest to him. The limitation was suffocating. For decades he'd perceived the green zone as a single organism, every root and structure and heartbeat part of one vast body. Now he was a single cell looking up at something too large to comprehend.
That absence was the worst part.
For forty years he'd been able to sense her. Distant, imprecise, but present — a pulse at the network's edge, a warmth he could reach for even when he couldn't reach her. Now that was gone. The rootmind and the World Tree had the network. He had a human body and an entity he didn't trust.
His reflection caught in a pool of rainwater near the trunk's base. He stopped.
The face was his. Mostly. Bone structure, jaw, the shape of the nose — those were the same. Everything else had changed. The skin was pale and smooth, unlined, the face of someone who'd stopped aging at twenty. The eyes were the worst. The whites were green. Not a tint — green, the color of new leaves, the color of the root network's pulse. The irises were darker, almost black, with flecks of that same green. The hair moved on its own. A slow drift, the strands shifting against each other with the viscosity of something that wasn't quite solid. He reached up and touched it. Cool. Slightly damp. The texture of water thick enough to hold a shape.
He looked human. If you didn't look at the eyes. If you didn't watch the hair. If you didn't notice the plants near him leaning in his direction.
The plants were awake. Sort of.
Around him, in a radius of maybe fifty yards, the green zone was more active than it had been. Leaves that had been sluggish were tracking light. Root tendrils that had been dormant were shifting through soil. The change was visible but slow — the difference between sleep and the first groggy minute after waking.
Beyond fifty yards, the sluggishness returned. The root network operated on its own power, without him actively driving it. The World Tree and the rootmind maintained the systems he'd helped build, but the direct connection — the thing that had made the green zone spread, the resonance arrays hum, the living structures breathe — that was his, and he'd taken it with him when he disconnected.
The entity's assessment came clean. "The network will maintain current functions. Growth will slow. Resonance arrays will hold but won't expand. The defensive perimeter is adequate for now."
"For now."
"Your empires are circling. One will test the perimeter eventually."
Chris looked at the green zone. Forty-one thousand people. A city built with knowledge that wasn't his, filtered through memories of anime he'd watched in a dorm room in another world. A woman at the center of it who'd made him into something he'd never asked to be.
He started walking toward the shrine.
His legs hurt. His lungs burned. The entity adjusted his breathing rhythm, and Chris let it, because the alternative was collapsing before he reached the city. He needed to reach it before someone who didn't know what he was found him wandering the green zone looking like something that had crawled out of a dimensional rift.
Which, in a sense, he had.
The shrine rose in the distance. Living walls, root channels, the pulse of the network visible in the evening light as a faint green glow. People gathering for the evening. The Root Mothers arranging stones.
He was a mile away. His legs were shaking. The entity offered muscle reinforcement.
Chris accepted. Triple-checked the offer. Clean.
He kept walking.