Professional libraries like Boom Library "Organic Horror" or Krotos "Biohazard" contain similar squelching + sub-bass hits. No exact match exists publicly.
During the height of the anime's first season in 2021, several official and community versions of the sound effect and accompanying theme were released: Official OST : The track "Self-Embodiment of Perfection" mahitos domain expansion sound effect 2021
The sounds are not synchronized to a steady beat. They are arrhythmic – mimicking biological chaos (peristalsis, cell division, random nerve firing). Professional libraries like Boom Library "Organic Horror" or
This guide covers what the sound is, why it’s unique, how to find it, and how to use it. why it’s unique