Reincarnating as a demon in sousou no frieren

Ever since I named my magic "Berechnung," I've noticed something incredible: by temporarily accelerating my flow of mana, my mental faculties significantly improve . Everything becomes clearer and sharper. Even without fully activating my magic, I feel like I'm passively experiencing a gradual improvement as well.

The most amazing thing is my perception. It has increased to such a degree that when I enter this state, I can feel and control my body in a way I never thought possible. It's as if I can manipulate each muscle individually. I can control the contraction and relaxation of muscles I didn't even know I could manage , even coordinating large muscle groups with incredible precision. It's as if I have absolute control over every part of myself.

Then, a thought crosses my mind. If my magic enhances my perception and physical control, could it be possible that it's also allowing me to control the electrical signals in my nerves? If so, I could access a level of control over my body that even normal humans couldn't imagine. Every movement, every nerve impulse, calculated and manipulated at will.

Despite this, I feel an instinctive need to improve my magic, as if it were something I must do, but I am unclear on how to achieve it. So far, all I know about magic is that I visualize something, and by channeling mana, that visualization becomes reality. However, I have a feeling there are more variables I do not yet understand. I wonder if knowing how something works in detail could help me use less mana. Maybe, if I apply my knowledge of biology and computing, I could optimize my magic in some way.

Perhaps what I need is to develop a magic that allows me to see how my own body works from the inside. If I could visualize my interior , I would have a clear mental image of how my organs, muscles, and nerves are functioning . I could use this information to improve the flow of mana more efficiently. Maybe that will be my next skill: an internal perception magic, granting me a deep understanding of my own physiology.

This could be my second magic, something that not only allows me to improve physically but also optimizes my mana usage.