It's the End of the World, so There's Nothing Wrong with Having an Arsenal, Right?

Han Xiao was reborn, before the end of the world. In this end of the world where monsters existed, there was no possibility of survival. But after being reborn, I have a system, a whole arsenal! Bite! Sign in successfully and get a box of SSS-level Golden Legendary Sniper Barrett. Bite! Sign in successfully and get an SSS-level atomic cannon. Bite! Sign in successfully and obtain the SSS level invincible fleet. … Machine guns, cannons, airplanes, warships, rockets, unlimited skill sets... You can get whatever you want! End? Sorry, I am the end! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.