Responses
Hamel has some knowledge of magic because of his previous life and Senya but he took his time to learn more about magic as Eugene. He became a disciple of the Red tower master and learned Senya's witchcraft. He is not totally op for everyone. Eugene almost died when he encountered Amelia and will loos if he fights Carmen or the Patriarch.
The good parts will come soon. I suggest reading the novel it is more detailed.
mostly the plot just goes by beating up others and going to top, mc personality is boring as well, a know it all magically, too op, no thinking and just already have what he needs and too op for everyone.