This is something I heard directly from someone. I never had any desire to verify it myself — but it lodged itself in my mind in a way I can't quite shake, so tonight I thought I'd share it with all of you.
It concerns the west exit of Shinjuku Station. The underground passage there.
This person had frequent reason to head toward the Tokyo Metropolitan Government building. Several times a week, for work. A route so familiar the body simply takes over — they told me they could walk it while looking at their phone, that's how deeply the path had settled into their bones.
One night — past eleven o'clock, they said. Not so late as to worry about the last train, but the crowds had thinned, the flow of people grown sparse. They entered the concourse and started walking, straight ahead, the way they always did.
The feel of the tiles underfoot. The pale wash of fluorescent light. That particular underground smell drifting from somewhere — cold exhaust and dust, all mixed together. It was all supposed to go on just as it always had.
…And then.
The sensation beneath their feet changed.
Not tiles. Asphalt.
They looked up. Street trees. Open sky. The cool air of night, outdoors.
For a moment, they had no idea what had happened. No memory of climbing stairs. No sense of having walked up any slope. They were simply standing on the surface, with no account of how they'd gotten there.
They said a sound escaped them — just "huh?" — and that it took something genuinely abrupt to make a sound come out like that.
On its own, that would be unremarkable enough. That whole area was once the site of the Yodobashi Reservoir — land that was excavated deep to hold water. Even after redevelopment, the old contours of the terrain remain, and the underground passages connect to the surface in ways that catch you off guard. Plenty of people are startled the first time. That's all it was, they told themselves at first, and even laughed a little.
But that night was slightly different.
After emerging onto the surface, they happened to glance back. Just to get their bearings — to see which exit they'd come out of.
It wasn't there.
Not that a wall had appeared in its place. It was simply that there was no way to tell where they had come from. Street trees in a row. A road stretching on. Nothing else.
Something felt wrong. They backtracked a little, looking for the entrance. The opening that should have been there was nowhere to be found.
They did eventually locate another entrance, of course. They made it back without any trouble. That part is fine.
But that isn't what has stayed with them.
The moment they stepped out onto the surface, just for an instant, they felt something touch them from behind. Not the shoulder. Lower than that. A cold, smooth sensation that seemed to pass across their lower back — like a slow, quiet stroke.
Not a push. Just a touch. As though something that had been trying to come out alongside them had stopped, just short of the surface.
Apparently they avoid the west exit now, whenever they can. When I asked why, they said only one thing.
"The underground there goes too deep. They say it was used to hold water, don't they. I just don't think water was the only thing that collected down there."
