The Relay spins to life. The rings spin faster, faster than they should. White lights run along the length of the extended prongs and the entire megastructure flashes blue before releasing the fleet.
Space is a vacuum. No sound travels through it. But every radio, every receiver, every ansible in the system plays the same sound. The numbing, terrible bass roar. Every sensor and warning beacon that still works in the system shows the hundreds of shapes entering the system from the relay. Dozens, hundreds of smaller cruisers. Thirty ships, each two kilometers long.
The Reapers have come.
The fleet of newly formed Destroyers, flanked by countless black orbs which glow with crimson lightning flies ahead of the dreadnoughts. They fly through dead ships and kuiper belts, deflecting flotsam and rock off their bare hulls, a swarm of red eyes and bass roars marking their paths.
It is then that they notice that something is wrong. Not amiss, for that implies something as simple as miscalculation. The ageless, infinite minds of the Reapers realize that something is wrong. They should have passed planets at this point. Moons and comets. But instead, they only find wreckage and the void.
And then, precise, exacting laughter fills the emptiness of space.
"Limited things of sickness and blasphemy. You come to my stronghold and you delude yourselves with force of arms."
The first of the worlds comes into view. It was once a small moon around one of the planets. Possibly a comet, caught in the gravity well of a world. But now it is a perfect sphere, glowing with colorless white fire.
"You believe you are beyond judgement. That you are beyond threats. You believe wrong."
Thirty dreadnoughts, hundreds of destroyers, and countless occuli open fire at once. Spheres shatter under the onslaught. The glass world melts and distorts, beams of liquid metal carving it in half. White fire fills the void.
And then one of the destroyers explodes as a single shard of crystal cores it from end to end.
Beams fire off from the dreadnoughts and the fighters as the destroyers begin exploding, one by one. Crystal spheres the size of the world-globe begin appearing. A slow, steady realization dawns upon the godlike intellects of the Reapers. Because they can now see what was the star of this system. As the white fire bathes them and the star moves, the Reapers revisit a long buried emotion.
Terror.
"There is a realm of existence so far beyond yours that the best you can do is mock it through imitation and worship. We are that existence."
Ten thousand spheres hover through the void. Shards of crystal and glass rain down upon the Reaper fleet as the small, high pitched laugh echoes through the machines, along with a silent whisper of a name.
"We are Hierarchy."