Before them stood massive doors, crowned with intricate symbols and complex mechanical elements. They seemed to breathe, slowly pulsing with a faint light.

Eili stopped, peering at the doors.
— This isn’t just an obstacle, — she said, touching their surface. — It’s… a barrier.
Lumis walked around the doors, checking for another way. But the walls around them merged into a uniform surface, depriving them of any hope of going around.
— They want us to decipher this, — he said, studying the symbols intently. — But how?
Eili crouched at the base of the doors and took out her fragment. The light from it immediately began to react to the symbols, but it was a disorganized flicker, as if both sides had yet to find a common language.
— Try yours, — she suggested.
Lumis raised his fragment toward one of the mechanical elements. It glinted for a moment, but nothing happened.
— Something isn’t right here, — he sighed. — We’re missing something.
Suddenly, one of the symbols on the doors flared brighter than the others, catching Eili’s attention. She leaned in closer, examining its shape.
— This isn’t just a symbol, — she whispered. — It’s a sequence.
— A sequence? — Lumis repeated.
Eili nodded.
— If we reproduce it correctly, the doors will open. But it seems like a riddle—parts of the sequence are hidden within ourselves.
Lumis pondered and looked at his fragment. Its surface began to change again, reflecting new patterns.
— There’s something here, — he said, showing his fragment to Eili. — It looks like part of your sequence.
Eili glanced at her fragment and compared it with the symbols on the doors. They indeed complemented one another.
— Maybe we need to synchronize them, — she speculated.
They simultaneously raised their fragments towards the doors. The symbols on their pieces merged into a single entity, and the doors began to slowly rotate, revealing a narrow passage.
— That was too easy, — Lumis remarked, looking at the dark passage beyond the doors.
— Easy? — Eili echoed, turning back to him. — This is just the beginning.
The darkness behind the doors seemed to swallow any light, creating a sensation that they were approaching something much larger and more dangerous.
— We need to move forward, — Eili said, gripping her fragment tightly.
— Alright, — Lumis replied, taking a deep breath. — But now we know: everything we need, we already have.
They stepped forward, and the doors closed behind them, leaving them in an unknown space filled with barely audible mechanical sounds and pulsing energy.