Kouchu, a 13-year-old Crystal Brawler, with a missing mom and a dead father, and also happens to be a young bartender for a part time job as shown in the series, also with a sly and serious personality, he ventures to go forward to become Master Champion. He starts off with Ninecoat following him to become his Crystal Monster. Kouchu agrees and they went on. While Kouchu collects the eight medals in order to participate in the Gem Gamer Nine Cup, he encounters Shinsho, his rival who competes against him, befriends Sakuro, Shanji, and Maeko, the other Crystal Brawlers and Kouchu's childhood friends, even though they have worried that Kouchu grew apart from them to earn money working at the bar at such a young age.