Drawing the Sword Billions of Times, I Can Cut Off the Gods

A clichéd story of upgrading after time travel, but it deviated from the direction due to a system bug. Desiring to become stronger, he was trapped in the secret space of the system for a thousand years. Only by upgrading can he leave this ghost place. But the painful thing is that he keeps fighting but can never improve his level. He drew his sword for billions of times and fought for billions of times. He stepped on the mountain of corpses and sea of ​​blood and slowly stared into the abyss. [Congratulations, the system repair is completed! You will be transported back to the real world in thirty seconds! The dormant beast reveals its claws and fangs, and all things will succumb to the light of his drawn sword! "What SSS-level monsters, what so-called gods from unknown latitudes, can you withstand my sword?"