Chougen Market Heroes: Menko Reverser Kakeru

The story is set in a world where heroes are part of various companies, taking down villains plotting ruin on the world. The story begins with protagonist Kakeru Ginga, Japan's best player of a hobby game called "Ultra Menko." As a child, his skill in the game put him in the limelight, but 10 years later, he works a normal job and longs to be a hero. When he meets a genius named Dengaru, it awakens his old passion and the drive within him to become a hero.

(Source: Anime News Network)