This is a world where heroes are created by people's trust, and the hero who gains the most trust is known as X. In this world, people's trust can be quantified through data, and these values are reflected on everyone's wrist. As long as one gains enough trust points, an ordinary person can possess superpowers and become a superhero who saves the world. However, the constantly changing trust values make the path of a hero full of uncertainties...

(Source: Official To Be Hero X home page)