The SONIDO Project

The Takomst Corporation has been a leader in the medical industry for decades. Manipulating human destinies, the power behind drugs and treatments-all this was only a small part of what they had planned. They kept the world under their control, but now the final phase has arrived: a mysterious frequency that will destroy humanity. Or at least that's what they believed.
The consequences were far worse than expected. After the sound, those who remained mentally healthy became murderous, soulless bodies. However, the real horror befell those who suffered from mental illness. They did not perish, but instead, a dark and powerful force awoke within them. While masses of people turned into lifeless corpses, the survivors grew stronger... and the world was turned upside down.
Raj Numb and his friends find themselves in a world where every step they take is life-threatening, and where the greatest threat is not what we see, but what we no longer understand. The power of the survivors, the dark secrets of the corporation, and the strange voice's influence are becoming increasingly intertwined. The effects of the SONIDO Project are reaching everything, and those who remain alive are no longer who they once were. The trail of the Takomst leads deeper and deeper, and they uncover a secret that will change everything.
Amidst the ruins, after the catastrophe, one question remains: What will be the next step? Will the survivors be able to reverse the process, or is the world lost forever? The answer will determine not only the future, but also their own fate.
The SONIDO Project changes not only the fate of humanity, but also the souls of the individual survivors. But what will remain of them when the world is no longer the same? And is there anything that can save them from total annihilation?

(NOTE: This is a translation of the original hungarian book. Translated by DeepL, translation mistakes are present.)