Fantasy: the World-Destroying Dragon Was Trampled to Death at the Beginning

I accidentally traveled through time at the beginning and accidentally stepped on the world-destroying dragon! He saved the world and awakened the bodyguard system. As long as he received more bodyguards, the rewards would be greater. As a result, all the big guys became his bodyguards. He responded to his call and was protected wherever he went. Even squatting in a manhole, there are thousands of people accompanying him. The protagonist calls out: My mother-in-law! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.