Student at JCC - Sakamoto Days Assassin.

The first time she saw the lines, she was seven years old, sitting on the tatami of her family home with a spider crawling across the woven straw in front of her knees. The line was silver, no thicker than a strand of silk, and it pulsed with a faint rhythm that matched her own heartbeat. It stretched from the center of her chest to the spider's body, and she understood without anyone explaining it that if she followed that line, the spider would die. Not eventually. Right there. In exactly four seconds. She could see the entire sequence unspooling in her mind like a memory of something that hadn't happened yet—the shift of her weight onto her left hand, the angle of her right arm, the precise spot where her thumb and forefinger would close, the tiny dry crunch of the exoskeleton giving way. She could also see a second path, and a third, each one branching away from the present moment into a different version of the spider's death, each one requiring a different set of motions, a different weapon drawn from the room around her. She didn't follow any of them. She sat frozen, her heart hammering against her ribs, and watched the lines shimmer and fade until there was nothing left but an ordinary spider crawling across an ordinary floor. She told no one. Not her parents, not the other children in the neighborhood, not a single soul. The ability stayed locked inside her, a secret gift she didn't ask for and didn't know how to refuse.

For years she treated it as a strange private game. Walking through the market, she would watch the ribbons of silver light spool out from her body toward the strangers around her, showing her how to end each one of them. A vegetable vendor laughing with a customer: a sharp tug on his collar, a twist, a fall, done. A woman carrying a basket of laundry: a sweep of her ankle, a crack of the skull against a stone step, done. The lines appeared unbidden, and she learned to let them come and go without acting on them. They were not commands. They were possibilities. And for a long time, that was all they were.

By the time she enrolled at the Japan Clear Creation facility—the JCC—she had made an uneasy peace with what she could do. The paths were simply there, like her own pulse, like the itch of nicotine that she would later come to crave. They required no special effort, no squinting concentration. When she looked at a target, the lines unfurled themselves like the legs of a waking spider, crisscrossing the air, each one a flawless choreography of lethal motion. The hard part was learning when to ignore them. The hard part was learning that there were other things in the world worth seeing besides the quickest way to end a life.

She had entered the JCC because she was good at killing, and because she wanted to understand what that meant about her, and because the institution promised a framework in which her abilities could be honed and directed. She had not expected to find friends. She had not expected that she would meet two boys who would crack her open and fill the space inside her with something loud and bright and achingly precious.

Taro Sakamoto was a wall of muscle and silence, a boy who communicated in grunts and monosyllables and seemed to think about nothing except food, combat, and more food. Yoichi Nagumo was his opposite—grinning, playful, with a vulpine sharpness hidden behind eyes that crinkled into cheerful crescents. The three of them collided in the training halls, on the gun range, in the dormitory corridors, and something clicked into place that Rion hadn't known was missing. With Sakamoto and Nagumo, she didn't have to pretend to be normal. She didn't have to hide the way her vision worked, didn't have to downplay the speed of her reflexes or the cold precision of her strikes. She could laugh while dodging a knife thrust, could hurl insults and praise in the same breath, could watch the two of them bicker and brawl and feel a warmth spread through her chest that had nothing to do with combat.

The faculty hated them. The other students were terrified. Rion loved every second.

She remembers one training exercise in particular, a paintball elimination scenario that was supposed to last maybe an hour. It stretched across nine. The other students had been picked off within the first sixty minutes, but Rion, Sakamoto, and Nagumo had treated the whole thing as a personal challenge, an excuse to push each other to the absolute limit, and the limits kept receding. The classroom where the remaining students had gathered with Etsuko Satoda buzzed with nervous complaint. Everyone else had been shot and withdrawn long ago. Only those three were still going. Satoda sighed and remarked that the trio hadn't been on a field trip in quite a long time, so they were probably just thoroughly enjoying themselves. If they didn't let those three play to their fullest extent, she added with a tight, knowing smile, their accumulated stress might build up to the point where they accidentally killed someone inside the school. The students, already creeped out, said they wanted to go home immediately.

By the third hour of the fight, Rion was sitting cross-legged on the roof of a moving civilian train. The wind clawed at her jacket, pulled strands of hair across her face, and made a mockery of every attempt she made to ignite the cigarette clamped between her teeth. The lighter flicked, sparked, died. Again. Again. The flame refused to catch, beaten down by the gale, and a surge of pure irrational frustration rose in her throat. She threw the useless thing over the side of the train, watching it clatter away into the dark. Her unlit cigarette stayed in her mouth, a small dry weight that she could not stop fidgeting her tongue against. The need for smoke was a physical itch now, a hum beneath her skin that sharpened her irritation and made her want to hit something.

The something arrived. Nagumo materialized in the air above her, dropping from a bridge the train had just passed under, his knife descending in a straight line aimed at the crown of her skull. She didn't turn around. She didn't need to. The displacement of air, the subtle vibration through the metal roof, the instinct that lived in her spine—all of it told her exactly where he was and what he intended. Her own knife was in her hand before conscious thought caught up, the edge of her blade catching his with a shriek of steel. She stayed seated, twisted at the waist, and looked up at him with her unlit cigarette still dangling from her lips. She asked him, perfectly calm, if he happened to have a spare lighter.

Nagumo's face split into that beaming, guileless grin that made him look like a child who had never done anything wrong in his life. He said he only had this, and he produced a handgun, cocking it with a theatrical flourish. In the span of a heartbeat, Rion's hands moved. She didn't see paths for disarming the way she saw paths for killing, but she didn't need them. Her fingers found the gun's release mechanisms, stripped it apart while Nagumo was still holding it, and sent the pieces scattering into the wind. She threw a punch at his head. He blocked it with his forearm, his grin never wavering. Before either of them could press the attack, the train roared toward a low bridge and a series of girders. The obstacles swept across the roof, forcing them both to abandon their positions. Rion kicked through a window on the right side of the train car and dropped inside; Nagumo mirrored her on the left.

That was when Sakamoto walked into the scene. He had, with the casual, unthinking strength that defined him, torn a handrail from the interior of the train—a long metal bar with circular leather hanging rings still attached—and he swung it at them both like a man trying to scythe down weeds. The bar tore through the frame of the car, and Rion felt the wind of its passage graze her cheek, a thin hot line that meant a bruise later. She cursed him loudly, calling him an absolute idiot. Nagumo, bloodied and beaming, remarked that tensions were certainly running high. He reached into his jacket, which Rion knew was lined with an absurd number of concealed blades—seven different types, she'd counted once during a particularly boring lecture—and selected two. He declared that whoever lost this fight would have to treat the others to dinner.

Hearing the wager, Rion let the paths come. They bloomed around Sakamoto's silhouette like a nest of silver serpents, each one showing her a different way to end him, each one precise and economical and absolutely lethal. She chose one and lunged, aiming a kick at Sakamoto's head. He blocked with the handrail, the impact jarring up her leg, and before she could recoil he caught both her right arm and Nagumo's in the leather straphanger loops. With a grunt of effort, he swung them both, using the handrail as a lever, and launched them bodily out of the train car. They crashed through the window together, the rings still locking their arms, and found themselves suspended in midair, falling from the second floor of a building into the open sky.

Even then, she was laughing. She had drawn a handgun in each hand—when had she done that?—and she pointed one directly at Sakamoto's face and the other at Nagumo's head. Nagumo, his right arm still bound, pressed a long knife against Sakamoto's neck. Sakamoto maintained his iron grip on the handrail that held them all together. Three bodies, falling, locked in a perfect triangle of mutual annihilation. Then all three of them looked down simultaneously and saw Etsuko Satoda standing on the ground below, her expression a smile stretched thin over volcanic fury. She ordered them to come down immediately. Every ounce of fight drained out of them in the same instant. Their faces went slack with dismay, and they dropped their guards as if a switch had been flipped.