Fate's Slave - Shadow Slave X Honkai Star Rail

Sunny traveled northwest, trying to cover as much distance during the night as he could. He rushed across gargantuan chains as a swift shadow, soared up onto the island, traversed them on foot, and dove into the darkness once he reached the other side.

He was moving across the Chained Isles with enviable speed... but still not as fast as someone capable of flight would. Using Shadow Step expended up a lot of Shadow Essence, so he had to replenish it often to continue riding the heavenly chains.

That, however, put him in a lot of danger. The islands were teeming with Nightmare Creatures of all kinds, as well as deadly natural... well, unnatural, really... threats. Sunny had to remain cautious at all times, keeping one shadow wrapped around his body while the other two scouted ahead.

He hid in the shadows to avoid fighting with wandering abominations or, if there was no other choice, teleported away. These jumps, however, only served to devour more of his Essence, forcing him to rest and circulate it through the coils of the Soul Serpent as he waited for his Cores to fill up.

Most of the time, he didn’t feel like there was a real threat to his life. Sunny’s combination of Attributes and Abilities made him a very hard prey to hunt. No matter what kind of a horror tried, he always managed to slip away — for now, at least.

As long as he did not venture into the territory of the really terrifying Nightmare Creatures, like those Corrupted fiends that claimed some of the islands or the beings that dwelled on the dark side of them, he was going to be alright for as long as he managed his Essence carefully. Against those powerful abominations, though, even being a shadow was not a guarantee of safety.

On his way, Sunny visited many islands that he had already explored before, and some that he never had a reason to visit. Each was lethal in its own way, and hid alluring mysteries... most of which were bound to turn out to be nothing but inescapable traps, of course. He suppressed his curiosity and moved past.

With two skies full of bright stars, the Chained Isles were stunning at night. Even while rushing forward and hiding from the abominations populating this breathtaking and terrible land, Sunny couldn’t help but marvel at its dark beauty.

But beautiful things... beautiful things were the most dangerous. By now, he had learned that lesson all too well.

At dawn, Sunny finally reached the island that was supposed to be the first stop on his journey. It was a desolate place where nothing lived, with rocky ground and plenty of small impact craters that had been left behind by the debris on the neighboring island.

The chains holding that island in place had broken once, a long time ago. As the result, not restrained by anything, it soared high into the sky and eventually fell apart, ripped to pieces by the Crushing.

It’s remaining neighbor was not of any particular to Sunny, but it was a good place to rest and catch his breath.

Hiding in one of the craters, Sunny ate a miserly breakfast and drank from the Endless Spring. Then, he looked at the rising sun, studied his map for a few minutes, and summoned Saint.

As the taciturn demon stepped out of his shadow — at enough of a distance to not subject him to the soul-eroding effect of the Broken Oath, of course — Sunny glanced at her, tiredly rubbed his face, and said:

”I am going to sleep. You stand watch, please.”

The Shadow stared at him indifferently for a second, then slung her sword over her shoulder and turned away.

Sunny sighed.

He could do without sleep for a couple more days, but it was wise to keep himself in the best possible shape. One never knew what could happen in the Dream Realm, after all.

Using his pack as a pillow, Sunny lay down and close his eyes.

’Just a few hours...’

***

A day later, he reached the Reckoning.

The ominous island that so many people in the Sanctuary dreaded was large, spanning no less than a dozen kilometers across.

What’s worse, it was supported by only two chains, which were situated almost exactly opposite of each other. Two get to the next one, Sunny had no choice but to travel the whole length of the island.

There was grass covering the ground, with a forest of tall evergreen trees visible in the distance. He could see a rocky hill far away, with a waterfall rushing from a weathered cliff. Just like everywhere on the Chained Isles, it was unclear where the water came from and where it went. Sunny was already used to the strangeness of this land to pay it any attention.

The Reckoning seemed like a beautiful and tranquil place. Idyllic, even.

However, looking at it through the eyes of the shadow, Sunny couldn’t help but feel a deep sense of unease. Something... something was very wrong with this place.

It was very picturesque, however, he couldn’t see or hear any living beings on the island. There was no sound other than the rustle of the wind, no movement other than the slow swaying of the trees. There were no beasts, no insects, no... anything.

Not a single Nightmare Creature could be seen wandering the expanse of the peaceful island.

What could be so terrible that even Nightmare Creatures did not dare to come to this place? Or had they been slaughtered by the owner of the island? If so, where were the bones? Or bone dust, at least.

’...I don’t like this.’

Initially, Sunny thought of traversing the Reckoning in his usual manner, on foot. But now, he changed his mind. It was better to waste an additional amount of Shadow Essence than to risk meeting the ruler of this ominous place face to face.

If it had a face...

With a frown, Sunny used Shadow Step to leave the heavenly chain and appear on the surface of the island, near the shadow he had sent to take a look at it. Sunny did not assume physical form, preferring to remain incorporeal.

That way, he would be able to reach the other side of the Reckoning unseen.

’Where is that terrible creature, anyway?’

He couldn’t see any hint of it anywhere.

Full of grim apprehension, he slowly moved through the deep shadows that were cast by the tall trees of the evergreen forest.

No matter how hard Sunny looked, he didn’t notice any movement near him.

It was as though the Fallen abomination that gave the island its name, Reckoning, had simply disappeared.

’Maybe it can’t be seen...’

Sunny cut off his vision and concentrated on the Shadow Sense.

His perception of shadows came into focus, reaching far and wide.

And there...

’What was that?!’

There was one shadow in particular that didn’t belong to anything, approaching him with terrible speed.

’The... the bastard is invisible!’

Sunny froze, becoming absolutely still. In this state, he was not only one of the shadows, but also indistinguishable from the larger shadow he was hiding in. He didn’t possess a physical body, so nothing was supposed to be able to hurt him in that state. At least physically...

The invisible creature continued to move in his direction, even faster than before.

’Wait... no, something doesn’t make sense...’

Even if the abomination was invisible, why was there no sound? Why didn’t grass bend beneath its feet?

It was almost as if the Nightmare Creature that dwelt on the Reckoning was... really...

A shadow.

Before Sunny could react, the owner of the Reckoning was upon him.

And then, he learned that...

Shadows, too, could feel pain.