Review Detail of Luomaze in DXD: Revenge of the forgotten

The start of the story sets up what should be a revenge story.Revenge of the forgotten is the title but I'm not seeing any revenge or emotions leading towards revenge. The main character acts like a teenager who did not live a second life. He might have been sheltered in his first life to the point he is a child mentally.Even as he ages I am still seeing lack of brain cells.The world development is going in a unique way I haven't seen. It leads me to wonder how it's going to be useful content wise.Hope you continue the story and finish and grow as an author. But I would not be surprised if this is dropped before 100 chapters.