Pili Puppet Show: the Opening Drained the System

At the beginning, you travel to the dangerous world of Thunderbolt. If you want to be safe, of course you have to keep it up until you are invincible. Who knew that the system was so useless that I had drained it of it after hundreds of years? Forget it, my current strength is enough to do something in a difficult situation, so let's join the world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.