1535 chapters read.I think three stars is a correct rating.Writing quality: with errors. The author sometimes makes mistakes with the names of the characters. Naming 'character X' when referring to 'character Y'.Stability of updates: no problems for me.Story development: very repetitive.Character Design: Most of the characters are poor. Klaus is the character that contributes the most. Void brought something unique, but he is becoming mediocre. Gray is not a good MC, because of his personality everything becomes repetitive. Adding a good female character to bring romance to Gray's life would break up this repetitive dynamic, as long as she doesn't bring in the typical FMC storylines.World background: good, but the power system is deficient. Little variety of techniques especially for the MC. I still don't understand if a character can develop a technique based on ingenuity, practice, and elementary grade.I will continue reading the novel. I will modify or add a new review if necessary.