It Makes Sense for Me, a Full-Time Master and a Master of Guns, to Use a Heavy Cannon, Right?

Ten years ago in the ring, after clearing his opponent's health bar with one shot, he was questioned for cheating without any evidence and was banned from competition for ten years. Ten years later, in the ring, the past scene reappeared again, and everything was revealed. However, all that was exchanged was a light apology. In order to get on the stage that people once dreamed of, in order to prove himself, he picked up the trophy, wore the glory that belonged to him, and once again embarked on the road of professional players.