Hikaru loses his memory about Go and Sai

Two years after the birth of the dark Sai, Hikaru finally opened his eyes. He was sitting at a Go board he did not recognize, surrounded by black and white stones.

“Ugh… my head…” He grabbed at his temples, feeling unfamiliar calluses on fingers that looked too long, too strong. “Where am I? Why am I here? Why is… my body… so big?”

“What is this board game?” Hikaru frowned at the board. “I… I think I’ve seen something like it before. At Grandpa’s house.”

Around them, the press room held its breath. Camera shutters, which had been clicking nonstop only moments ago, fell silent. A red “ON AIR” light glowed above the doorway, forgotten.

Across from him, Touya froze. His fingers, still hovering over the bowl of stones, began to tremble.
“Hikaru… is that really you?” he whispered, tears gathering in his eyes. “finally.. welcome back.”

Hikaru stared at him blankly. “Do I… know you?”

For a moment, the only sound was the faint settling of stones and the distant whir of a TV camera’s motor.

“You don’t remember… anything?” Touya’s voice cracked. “The titles… the incidents in Kyoto…”

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When Aliens Found Something Wrong With Hikaru’s Mind

My designation is X‑07, but humans would call that a name. I have been studying their languages since our vessel first entered this planet’s orbit on the twelve‑thousandth lunar cycle.

Today is my turn to visit a city they call “Tokyo.” Mother‑Core says we must continue our experiments on human memory fragments and understand why their brains keep their true cognitive potential locked by default.

As always, we operate at midnight, when human defenses are lowest and their stories blame the lights in the sky on dreams. I drift over the river that cuts through the sleeping city, scanning for suitable subjects.

That is when I notice him: a solitary human male, standing at the water’s edge.

“Candidate identified,” I transmit to Mother‑Core. “Severe discontinuity. Possible external overwrite.” Her response comes at once: a pulse of approval. “Isolate and retrieve.”

I lower the field. To him, it must look like pale light on the surface of the water, rising where there should be only reflection. Gravity bends. The sound of the river stretches and thins. His body lifts without struggle, pupils widening, consciousness dropping into the soft gray zone humans call “almost asleep.”

On the examination deck, I place him in the cradle and open the first layer of his memories. Images bloom in the air between us: a cramped attic, dust, wooden stairs, a boy’s hand reaching for a box on a high shelf. Then, impact. Pain. Silence.

I advance the temporal index. The next decade should appear: growth, education, social bonds, the slow crystallization of identity. Instead I find a void. Ten full planetary cycles compressed into a smear of static, like a recording overwritten too many times.

“Anomaly confirmed,” I report. “Subject’s chronological age: twenty‑something. Conscious self‑model: approximately twelve. Memories between these points: inaccessible, replaced, or sealed.”

I probe deeper into the static. There, beneath the noise, something pushes back. An echo that is not human, patterned, disciplined, obsessed with a grid of intersecting lines. For a moment, it feels as if something on the other side of the memory is staring at me.

“There is… another presence,” I tell Mother‑Core. “Non‑human structure bound to his neural pathways. Designation unknown.”

She is silent for three point two heartbeats of the subject. Then: “Do not erase. Attempt restoration. This human is damaged in a way we did not cause. If we repair him, we may learn how he was broken.”

X-07 — Restoration Complete

The restoration takes four hours and eleven minutes.

I reassemble the subject’s memories in the correct temporal sequence, clear the residual spiritual interference, and confirm that the original consciousness is stable and dominant. The ancient non-human presence has receded to a depth below my instruments’ reach. Whether it is gone or simply quiet, I cannot determine.

Standard protocol calls for me to return the subject to the coordinates of retrieval and disengage. I follow protocol for the most part. I return him to his dwelling. Third floor. Window left ajar. I settle him onto the futon without disturbing the objects on his floor: stacks of game records, a cracked ceramic tea cup, a tattered fan sealed inside a glass box on the desk, still smelling faintly of river soil and something older.

It is the game records that delay me.

I have seventeen minutes before Mother-Core expects my disengagement signal. I use them to do something I do not log.

The subject’s cognitive architecture, once cleared of the ancient interference, reveals an unusual processing structure. Spatial pattern recognition operating in parallel with probabilistic tree calculation, both running simultaneously in a loop his species would call intuition. It is not the most efficient configuration. It is, however, the most human one I have ever encountered.

I do not rewire it. I simply expand the available depth. The way one widens a river channel without changing the river itself. His intuition remains his. His style remains his. His hands will still play the way they always played: the slight forward lean, the long pause before a pivotal stone, the habit of tapping the bowl rim twice before reaching in.

But the depth of the tree he can read in that pause?

I bring it to a level my instruments classify as: beyond recorded human performance. Comparable to top-tier computational analysis systems.

Mother-Core does not ask why my disengagement took seventeen minutes longer than estimated. She trusts my logs.

My logs do not mention the game records.

Observation note, appended post-mission, not transmitted:
I searched our entire database. No other species in seventeen catalogued civilizations plays a game where every single game is unrepeatable. I do not know what to do with this information. I suspect I will be thinking about it for a long time.

I disengage.


Hikaru — 6:14 AM

He woke up knowing exactly where he was, exactly who he was, and exactly what he had done.

The memories came back not like a wave, not like floodwater. More like a dam wall ceasing to exist. The pressure on both sides had been equal all along. Now there was no barrier, and the water became the same water.

Sai’s face. The first time he saw it. The way Sai had wept, genuinely wept, when Hikaru agreed to let him play.

Then Sai vanishing. The years after, hollow, then slowly refilled.

Then Higashiyama. The excavation. The ancient fan. The words from the Kyoto University manuscript. The rain. The ritual. And then the cold: that terrible wrongness, like someone had opened a window in the back of his own skull, and something ancient had climbed through.

He remembered the frost on the glass. Two years of watching through his own eyes, unable to touch anything, unable to stop anything.

He lay still for a moment and just breathed.

Then he noticed the Go board.

It was already set up. Not mid-game. Not reset. Set up. Stones arranged in a shape he recognized immediately: the final fuseki of Sai’s last recorded game, played against Touya Kouyo, left unfinished twelve years ago. Hikaru had not set this board. He had been unconscious for most of the night. He could feel the gap in his memory, a clean blank where hours should be, and beneath it the faint residue of something clinical, something vast and unhurried that had passed through him the way weather passes through a valley.

Something had put him back together. He did not know what. He did not know how.

But whatever had gone through his memories had also, apparently, touched the room.

Or something else had.

He picked up a black stone. His fingers found the pinch grip automatically, the grip Sai had corrected seventeen thousand times. He held the stone over the board, over the point where the sequence would logically continue.

His hand was shaking. Not from fear. From the specific trembling of someone who has been in the dark for two years and is looking at light and cannot yet fully believe the light is real.

He placed the stone.

From the direction of the glass box on the desk came a sound. Not a voice. Not a knock. Something like a very old door, very far away, being pushed open by someone who was not sure they were allowed.

Hikaru did not turn around.

He reached into the white stone bowl instead. Set another stone. Then another. Playing both sides now, the way he used to in middle school: black and white, alternating, filling in the unfinished sequence one stone at a time.

“I know,” he said, to the room, “that something happened to me last night.”

He set a stone in the upper left corner.

“I was unconscious for most of it. I do not know what it was.” Another stone. “But whatever it was, it went through every memory I have. Every single one.” A pause. “Including the ones with you in them.”

The room smelled like ink. It had since the moment he woke up.

“And you did not come back empty-handed,” Hikaru said quietly.

“No,” said a voice that had not existed in this room for twelve years. Soft. Formal. Heian-accented Japanese so precise it belonged in a university lecture hall. “I set this board before you woke. I wanted to see if your hands still knew the shape.”

Hikaru looked down at the board. One stone left.

“Do they?” Sai asked.

Hikaru placed the final stone.

Kachi. Clean and percussive, the sound that means a good move was played, and the board held the finished sequence between them like a sentence that had taken twelve years to finish.

“Yeah,” Hikaru said. “They do.”

He turned around.