Yesterday's Horror

In the 26th century, humanity had drained Earth dry.

The survivors crowded into underground shelters, living on synthetic protein bars that tasted like cockroaches. Then Yesterday Dimension came knocking: Earth's yesterday, where resources were inexhaustible and replenished daily, and the mountains, rivers, and streams were still intact.

There was only one thing missing: humanity.

In its place were strange creatures lurking everywhere, and motionless black shadows standing by the roadside.

The shadows were "Harmless-Class." They scattered when light shone on them, then returned when it went out. The textbooks said: Maybe they're just shadows.

Lin Mo had only just transmigrated and hadn't had time to sort through his predecessor's memories when he was shoved through a portal.

Two rumors circulated in his predecessor's file: some said he killed the monster and was a hero; others said he hid and barely survived, making him a coward. Only one thing was certain: the whole class died, and only "he" came back alive, while the monster disappeared for no apparent reason.

Here, you must never look up at the blood moon. One glance, and you'll become its follower.

Here, the staircase has no end. You'll never make it out.

Here, bullets can't pierce monsters, but they can kill the awakened, so the shelters never hand out guns.

Here, touch the black river water, and something will crawl into your body, walk for you, reach out for you, and push your friends into the river.

Two days. Three rifts. Fifty people.

The professor said: Come back alive.

Sooner or later, Lin Mo will learn that those "harmless" shadows were never harmless.

And no one who returns from Yesterday ever comes back whole.