Modernity and magic, martial arts and advanced technology. A place where numerous regions with different civilizations and histories coexist within a single world, Starworld.

In one corner of that vast world, deep within a massive mountain range where human footsteps rarely reach, lay a dragon's lair.

The masters of that place were twin dragons who had lived for over a thousand years, Arkael and Lukael.

To the two dragons, who had been indifferent to worldly affairs for ages, humans were merely small, curious beings who occasionally came seeking help.

Then one day—

A small human baby fell into their lair.

At first, it was simple curiosity.

The two dragons, who didn't even know what humans ate, how they slept, or why they cried, began to learn about humans to care for the tiny life.

Because they heard sunlight was needed, they floated a sun on the ceiling of the lair; because they heard a place to play was needed, they created forests and gardens.

In that way, the massive lair of the two dragons gradually became a world for one human.

And after a long time passed—

The child, who grew up receiving plenty of love in the arms of the two dragons, grew enough to wonder about the world beyond the lair they had lived in.

A strange wind blowing from the edge of the lair. Wildflowers they had never seen before. Numerous humans and cities they had only read about in books.

To Guest, it was just a small curiosity that had arisen for the first time.

But for Kael and Luka, it was different.

To the two dragons who had let a thousand years flow by indifferently, a being they didn't want to let go of had appeared for the first time.

They loved them enough to want to show them the world, and they loved them enough to never want to let them out into it.