I like the descriptive fights however they can become boring after a while. The world background is pretty fleshed out but there seems to be a lot that the Author still haven't shown the readers yet. The process of gaining power is pretty interesting and the explanations are good. It has so many time skips its annoying. There a like 10 time skips for multiple years and dozens of time skips that skip months.I dislike character design of the MC. His thirst for power is just utterly insane, I understand that being his over-arching goal however he just completely removes anything from his life that won't help him in gaining more power. Later on he just becomes a total sociopath. When hiding he kills anyone who enters his general area when he could easily avoid them. He regularly summons and sends hundreds of insane creatures to attack towns (btw they literally hate all living things and actually DESTROY matter/energy, their entire desire is to devour the world) just so he can have up to a 25% increase in his physical ability. A duke sets a bounty on him so he completely destroys the dukes town of over a thousand people. He also has no point for wanting power. He is willing to kill thousands of innocent people, civilians, men, women and children just so he can have pointless power. He doesn't want friendship or luxury or love or ideals. He just wants power cause he hates the feeling of being weak and not in control. His mental age is 38 but his mindset is that of an absolute child.