Demon Slayer: Eclipse Breathing Technique

We do love tales, but if the tales become reality, it would be another story no one wants to hear or experience. That goes the same for demons. Reality makes us think differently. What if we were born in a world where demons rampaged in the night, and what if we became one of them, maybe a little different? We could be a hybrid as well. And suppose we knew every basic breathing technique that could remove filth from the world. What would you choose? To be a demon or to follow the humanity we had in the past?