Class G Battle Suit Fighter

A child from the lowest class of society, a simple G-class boy, will impose himself with his fists in a cruel world. He will advance from the sewers and sewers to the top and fame, from class to class, only with his perseverance, his rage, and his ability to survive. But getting out of the gutter is not easy, nor will the elites allow him to advance easily. Will his fists be able to impose himself on his cruel destiny?