Take Rewu to Another World

Ye Xinyu was confused! As soon as I opened my eyes, I traveled through time! ? Etc? Why does it feel wrong? ? What the hell! Who the hell broke my leg? And what's going on with that arsenal in your head? What should I do if I can't beat you with low strength? I have pistols, machine guns, and sniper rifles! What if someone else can fly? Shoot it down with missiles! This is the story of a boy from Earth traveling through another world with a thermal weapon!