The MC that was supposed to make an army was fooled to become a slave on the second arc
being 30 years old+Age (present world) being tricked doesn't make any sense. which it does make sense considering he was only working on a factory & hikkimori (bullied) +without deep philosophy instead focusing on what he likes then being killed. He got the philosophy of saving peeps and sheltered within an orphanage with good inhabitants would not make him fortified against veteran scammers in the adventure guild. therefore it should make sense that he can be tricked
Being Gun-Nerd is not = Being genius in the Social Relationship in humanity
the MC being surprised on the guy that sold him as a slave used a syringe (which was not supposed to exist in a medival world) to boost his capability during fighting is an idiocy based on his comment. Which should be considered a normal reaction (to be surprised that there is an advance technology by the inhabitants of the otherworld is reasonable)
Early City [Before Reconstruction Area] -He hoards things, Plans Carefully and only thinks about his survival and those close to him.
Desert City[Reconstruction Area]-Starts to care about more people, instict to danger always followed.
Hope City [Reconstruction Area]Starts to care about human civilation as a whole (Due to Alien Invasion and their experiment that caused the mutation). His ability [strong physique & 4th dimension transition] is now starting to create cracks to what keeps him human.
short summary in hope city event
The alien decided to wipe out the human race with anti matter bombs. But luo yan had captured the spaceship and first stabilized the remains of human civilization to start the 6million migration of people to the spaceship he captured. They decided to go to barnard system
His Growth is too much that even having s*x is hard