In the world of Demon Slayer, Flesh Manipulation is a powerful ability possessed by certain demons. This ability gives demons control over their own flesh, allowing them to manipulate it at will. Flesh Manipulation is a perfect example to showcase the adaptive nature of demons and their physiology. By manipulating their flesh, demons are able to create weapons, enhance their physical attributes and perform other powerful actions. The stronger the demon, the stronger the flesh manipulation technique is. This technique is a huge obstacle for the Demon Slayer Corps as they solely depend on their breathing techniques to defeat the demons.