The story is set in a surreal futuristic time where humans have "evolved" into smaller sizes, There were also humans who slept in cryogenic tanks until now which caused them to stay the same sizes and are giants compared to the futuristic humans. These giants have their brains surgically altered and are then used as mechs. The story is easy to follow and makes much more sense as you continue reading. The art was pretty good, keep in mind that this manga was published by Shintaro Kago so there are gory scenes. The characters were mediocre at best due to them being changed in every chapter.

Overall, if you like Mecha, Gore, and Attack on Titan then this would be a must-read. I give it a 7/10 and deem it as a must-read for Shintaro Kago fans.