The faint, rhythmic pulse in the atmosphere was barely a whisper against Ryuu's skin, an almost imperceptible tremor that most would have dismissed as the natural settling of the ancient stone hallway. Initially, he paid it no mind, his focus entirely consumed by the deadly architecture surrounding him and the bizarre gathering of beasts ahead. But then, a cold spike of realisation pierced his concentration.
His eyes narrowed as he watched the creatures. They stood in a loose, tense semi-circle, their forms completely motionless, yet the air between them shimmered with a strange, silent distortion.
'Wait a minute,' Ryuu thought, his breath catching in his throat. 'What if those vibrations aren't passive? What if they function like a biological sonar or an organic radar system?'
