Unbelievable Waste: Picked up a Bug-Level System at the Beginning

A young boy with a good-for-nothing physique travels through the world of immortality and picks up a system that can only complain. Relying on the bug-level ability of his heaven-defying physique, he counterattacks from the abandoned son of his family to the Lord of Chaos. The universe is restarted and the planes fight for hegemony!