In a dystopian future, technology advanced rapidly to the point that people can insurance their next life to reincarnate and start a new life in another world. Shinamori Akira is an average guy who lost his place in this world. With ensured safe payment, he used the Insurance Quantum and requested to be reincarnated into a severely harsh fantasy world and be gifted with a firm mind. Akira wanted to live a balanced life of relief and hard reality. He then died from a traffic accident and did reincarnate safely, but the next moment, his situation turn for the worst into a near-death situation, he faced a werewolf who gnawed his left arm. In a panic, he found out that chip is still installed in his brain and his right arm is still a cybernetic one. Calming himself, he managed to get out from predicament by killing the werewolf but trouble still hasn't ended. Him still holding technology from his world practically makes him a criminal, therefore, while he could make an emergency call, he couldn't tell the truth. Lastly, he is stark-naked. The call ended abruptly as Akira couldn't make out the sound due to noise. He then found six knights facing a big werewolf and assisted them in killing it. A problem arises as they cannot communicate. Joining them, Akira is involved in a fight against a dark wolf. The fight went fiercely and left only two survivors: Akira and Azuria Helzeksche. Promised to fetch him later, Azuria went above to report and Akira waited for her. Azuria didn't return and Akira is left stranded alone on the fifth floor. Half a year later, the fifth floor turned into a neutral zone between two forces, consisted of outlaws and people with no future. Akira who is marked as an enemy of both forces, is forced to stay and survive on this shady floor, with only cyber technology that he possessed and Cyber-Karate, can he survive in this violent world? *Ranked 5th in the 2015 edition of Takarajimasha's Kono Web Novel ga Sugoi! (This Web Novel Is Amazing!).