Review Detail of Kleisz in Demon lord from the dxd world

I'm not native english speaker but still knew some its word and little bit quite good at it so here is my review ... 1.The sentence have many mistakes that need to be fixed. 2.There is no separation between monologue, conversation and pov change in its paragraph. 3.Kinda absurd MC without properly control his own power first. 4.Even if its an AU his sudden wake up/born that make all over the world shake is kinda absurd, he is the ruler of the underworld not the WHOLE world where there some being that can defeat or rival him in power. So i think the author need some help from a good editor to fix some its mistake ... So well thats from me dunno if this is a proper review. Ciaossu~