Satoru Gojo was a great swordsman, but he didn't have his dragon yet, which he could ride and fight with. The dragon he wanted to tame was unstoppable. The dragon of darkness Suguru Geto. Satoru was always kind to this dragon, gave him food, but the dragon still didn't like him, although he couldn't do anything because Satoru had his horn

one day, satoru came to suguru's cage again and gave him food

— "Come on, eat, and then I'll tame you!" he was too excited about the idea of fighting side by side with the dragon.