Forgive me for my bluntness in this review. I really do not have a personal grudge against the author; he is actually one of my good friends. And honestly, besides the writing quality portion, the review isn't much of a roast.
Writing Quality: Has definitely improved since the author's last novel, but it is nowhere near perfect. The reason is because of inappropriate word choice and sentence structure (he is almost always in the passive) that makes both enjoyable and easy reading near impossible. For example, to describe tears and emotion, the author used (not an exact quote): "He was so sad that tears fell down his face and the white membrane became red." Red and white membrane?? This strange wording distracts the reader from focusing on the emotions. Apart from this, the author's style is more comedic, and the writing seems to be more detached everywhere else. The author also uses different variations of English, sometimes British English and sometimes American.
Stability of Updates: automatic 5 because the author has a positive record.
Story Development: To some, it might be a bit too fast, and to others, it'll be too slow. To me, it's too fast-paced. By chapter 6, we are already in the first scenario, and the main character got used to the system and this world he is in way too quickly. Even though he now has the memories of his past life in this new world, he should still be at least dazzled.
Character Design: I could feel that the characters were all very well thought out, from the way the main character had to experience all of the experiences his soul had in order to feel motivated to take revenge and/or live.
World Background: Again, I could feel that everything was well thought out, from the intricacies of the system (a genre that I find to be actually extremely difficult to handle) to the different characters and their stories that were introduced.
Work hard, Ansu chan (seven)!