The Core

This story is about a boy named Kumo, who is in his late teens aging at 17 years old. He lives in a society where everyone has something inside them called a Core, and this Core can host immense strength, giving the Core Wielder abilities beyond belief. This ability can be used for good, but also evil. This is the story of Kumo Tatsui, and his journey to become the strongest core user in the world.