The Dragon Clan's Ancestor of Ten Thousand Dragons, Beginning in the Abyss

The good news: You transmigrated into a familiar world, and your bloodline is exceptionally high-ranking.

The bad news: As time goes by, you start to realize something is off about this world.

You thought it would be a simple mission, but then you encountered a silver-haired, red-eyed girl swinging a greatsword at the serpentine corpses surging up from the seaside. She even kindly reminded you that hunting the Seaborn was her responsibility.

After returning, still somewhat bewildered, you investigated thoroughly and confirmed it had just been a coincidence. But before you could relax for long, a white-haired dragon girl appeared in your dream while you were resting. She gazed at you with such excitement, as if finding you had made her deliriously happy, and a dragon tongue that sounded like it was being sung across the world rang out:

The progenitor of ten thousand dragons in the Heavenly Abyss, the most ancient existence in the world, swam through the primordial chaos before history began, seeking the place where “existence” resides…

The progenitor of ten thousand dragons in the Heavenly Abyss? The Immortal Dragon?

Isn’t that an Aeon?

Why is one showing up in the world of dragons?

What? You don’t care about that, and you’re more concerned about why my golden eyes are gradually turning pinkish-purple?

Well…

“Are his eyes pretty? They’re not colored contacts, you know. It’s a maiden’s magic~”